twenty-ninth annual symposium of the laboratory for...

TWENTY-NINTH ANNUAL SYMPOSIUM

of the

LABORATORY FOR SURFACE MODIFICATION

Thursday, April 2, 2015

9:00 a.m. to 4:30 p.m.

Rutgers, the State University of New Jersey

DRAFT PROGRAM

Fiber Optics Auditorium Busch Campus

Piscataway, New Jersey

Laboratory for

Surface Modification Nano Physics

Laboratory THE STATE UNIVERSITY OF NEW JERSEY Laboratory for

Surface Modification Nano Physics

Laboratory



* = Student Presenter 2

8:30 Registration, coffee

9:00 Introductory Remarks Professor Torgny Gustafsson,

Director, Laboratory for Surface Modification

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9:05 Coupled Nonpolar-Polar Metal-Insulator Transition in 1:1 SrCrO3/SrTiO3 Superlattices: A First-Principles Study Yuanjun Zhou* and Karin Rabe Department of Physics and Astronomy

9:20 Magnetoelectricity in Fe Langasite Sergey Artyukhin*, David Vanderbilt and Sang-Wook Cheong Department of Physics and Astronomy

9:35 High-Carrier-Density Phase in LaTiO3/SrTiO3 Superlattices Se Young Park1, Karin M. Rabe1 and Andrew J. Millis2 1Department of Physics & Astronomy and 2Department of Physics, Columbia University

9:50 – 10:20 Coffee Break and Poster Session




10:20 **HIGHLIGHT PRESENTATION**

Electronic Structure of Hybrid Organic Inorganic Perovskites Interfaces Prof. Antoine Kahn Department of Electrical Engineering, Princeton University

11:00 Kondo Breakdown In Topological Kondo Insulators

Onur Erten1, Victor Alexandrov2 and Piers Coleman1 1Condensed Matter Theory, 2Institute for Advanced Studies, Princeton

11:15 Chirality Density Wave of the “Hidden Order” Phase in URu2Si2

H.-H. Kung*1, R. E. Baumbach2, E. D. Bauer2, V. K. Thorsmolle1, W.-L. Zhang1, K. Haule1, J. A. Mydosh3 and G. Blumberg1 1Department of Physics and Astronomy, 2Los Alamos National Lab, 3Kamerlingh Onnes Laboratory, Leiden University

11:30 Topological Insulator with Suppressed Bulk and Dominant Topological

Surface State Conduction Nikesh Koirala*1, Maryam Salehi2, Jisoo Moon1, Namrata Bansal3 and Seongshik Oh1 1Department of Physics and Astronomy, 2Department of Materials Science and Engineering and 3Department of Electrical Engineering

11:45 Charge Transfer at Si-PEDOT:PSS Interface

Xiaoming Wang 1, Mona Zebarjadi 1, 2 and Keivan Esfarjani 1, 2 1Institute for Advanced Materials, Devices and Nanotechnology and 2Mechanical Engineering

12:00 – 1:30 Lunch and Poster Session




POSTER PAPERS:

1) Temperature Programmed Desorption of Ionic Liquid from Metals

Aleksandra B. Biedron*1, Joseph Bloch3, Sylvie Rangan2, Edward W. Castner, Jr.1 and Eric Garfunkel1 1Department of Chemistry and Chemical Biology, Nanotechnology for Clean Energy IGERT, 2Department of Physics and Astronomy and Laboratory for Surface Modification, 3NRCN, Beer-Sheva, Israel

2) Perovskite-Related Oxynitrides as Photoanodes in Photoelectrochemical

Cells Bin Liu*, Eric Garfunkel, Martha Greenblatt and G. Charles Dismukes Department of Chemistry and Chemical Biology

3) Alkyl-Aryl Coupling Catalyzed by Tandem Systems of Pincer-Ligated

Iridium Complexes and Zeolites Bo Li*1, Long van Dinh1, Akshai Kumar1, Fuat E. Celik2, Alan S. Goldman1 1Department of Chemistry and Chemical Biology, 2Department of Chemical and Biochemical Engineering

4) Generation Dependent Ultrafast Charge Transfer Dynamics in Pyrene-Viologen Dendrons Zheng Gong*1, Jianhua Bao1, Takehiro Kawauchi2 and Piotr Piotrowiak1 1Department of Chemistry, 2Tokyo Institute of Technology, Department of Chemistry and Materials Science, Tokyo Institute of Technology

5) HafSOx Radiation Mechanistic Study with Low Energy Electrons Exposure

Feixiang Luo*1, Boris Yakshinskiy2, Alexei Ermakov1 and Eric Garfunkel1 1Department of Chemistry and Chemical Biology, 2Department of Physics and Astronomy and Laboratory for Surface Modification

6) Characterization of LiFePO4 Cathode Nanocrystals by STEM/EELS

Analysis Joseph Schneider-Haefner*1, Yuxuan Wang2, Jiye Fang2, Natasha Chernova2, Doug Su3 and Frederic Cosandey1 1Department of Materials Science and Engineering, 2Materials Science Department, Binghamton University, 3CFN, Brookhaven National Laboratory

7) Helium Atom Diffraction of Cyclooctatetraene on Cu (001)

John L. Wieczorek*, Erkan Z. Ciftlikli and B.J. Hinch Department of Chemistry and Chemical Biology

8) Nanoscale Synthesis of Nickel Phosphides as Novel HER Electrocatalysts

Ajay R. Kashi*, Anders B. Laursen, Bin Liu, Mariana J. Whitaker, Martha Greenblatt and G. Charles Dismukes Department of Chemistry and Chemical Biology




9) Ultrasmall Palladium Nanoparticles Supported on Amine-Functionalized SBA-15 as Efficient Catalysts for Hydrogen Evolution from Formic Acid Katherine Koh*1, Jung-Eun Seo3, Jin Hee Lee3, Anandarup Goswami1,2, Chang Won Yoon3 and Tewodros Asefa1,2 1Department of Chemistry and Chemical Biology, 2Department of Chemical and Biochemical Engineering, 3Fuel Cell Research Center, Korea Institute of Science and Technology

10) The Effect of Fe-Doping on the Electronic Structure and Activity of Nickel

Phosphide, Ni2P a Catalyst for H2 Evolution from Water Kelly R. Patraju*1, Anders B. Laursen1, Martha Greenblatt1 and G. Charles Dismukes1 1Department of Chemistry and Chemical Biology

11) Title Ni5P4 a Game Changing H2 Evolution Catalyst

Anders B. Laursen1, Kelly R. Patraju1, Mariana J. Whitaker1, Tapati Sarkar2, Nan Yao3, Kandalam V. Ramanujachary4, Martha Greenblatt1 and G. Charles Dismukes1 1Department of Chemistry and Chemical Biology, 2Uppsala University, Sweden, 3PRISM Imaging and Analysis Center, Princeton University, 4Department of Chemistry, Rowan University

12) Investigation of Propene and Pentene Dimerization by Acid Zeolites

Longfei Chao* and Fuat E. Celik Department of Chemical and Biochemical Engineering

13) Biased Photoemission and Ab-Initio Studies of Metal-Insulator-

Semiconductor Structures Malathi Kalyanikar*1, Sylvie Rangan2, Junxi Duan2, Gang Liu3, Stephen Weitzner4, Robert Bartynski2, Eva Andrei2, Leonard Feldman3, Ismaila Dabo4 and Eric Garfunkel1 1Department of Chemistry and Chemical Biology, 2Department of Physics and Astronomy and Laboratory for Surface Modification, 3Institute for Advanced Materials, Devices and Nanotechnology, 4Department of Material Science and Engineering, Penn State University

14) Surface Phonons in the Superlattice of the Topological Insulator Bi2Se3

Maryam Salehi*1, H.-H. Kung2, N. Koirala2, M. Brahlek2, S. Oh2 and G. Blumberg2 1Department of Material Science and Engineering, 2Department of Physics and Astronomy and Laboratory for Surface Modification

15) The Rutgers UltraSTEM

Maureen Joel Lagos and Philip E. Batson Institute for Advanced Materials, Devices and Nanotechnology, Department of Materials Science and Engineering, Department of Physics and Astronomy and Laboratory for Surface Modification




16) Capture and Release of Plasmonic Electrons in Ag@hexaniobate Nanopeapod Assemblies Mengdi Liu1, John B. Wiley2 and Piotr Piotrowiak1 1Department of Chemistry, 2Department of Chemistry, University of New Orleans

17) Metallic 1T Phase MoS2 Nanosheets as Supercapacitor Electrode Materials

Muharrem Acerce*, Damien Voiry and Manish Chhowalla Material Science and Engineering

18) Increasing Visible-Light Photocatalytic Activity via Modification of TiO2

Photocatalysts Ashley M. Pennington*, Katelyn A. Dagnall, Deniz A. Dindi and Fuat E. Celik Department of Chemical and Biochemical Engineering

19) Understanding Electron Energy Loss Mechanisms in EUV Resists Using REELS and First-Principles Calculations Sylvie Rangan1, Robert A. Bartynski1, Amrit Narasimhan2 and Robert Brainard2 1Department of Physics and Astronomy and Laboratory for Surface Modifications, 2College of Nanoscale Science and Engineering University, Albany

20) A Click Approach to “STAR” Ruthenium-Sensitizer

Runkun Sun*, Hao Fan and Elena Galoppini Department of Chemistry, Rutgers, Newark

21) Selective Electrochemical Deposition of LiCoO2 and Its Properties as an

Electrocatalyst for Water Oxidation/Oxygen Evolution Shinjae Hwang*, Graeme Gardner, Eric Garfunkel and G. Charles Dismukes Department of Chemistry and Chemical Biology, Institute for Advanced Materials, Devices and Nanotechnology

22) Characterization of Catalysts Using Helium Ion Microscopy and

Temperature Programmed Desorption Viacheslav Manichev*1, Can Xu1, Hao Wang1, Wenhua Chen1, Leonard Feldman1,2,

Torgny Gustafsson1 and Robert A. Bartynski1 1Department of Physics and Astronomy and Laboratory for Surface Modification,

2Institute for Advanced Materials Devices and Nanotechnology 23) Yeast Cells-Derived Hollow Heteroatom-Doped Carbon Microparticles for

Sustainable Electrocatalysis and Renewable Energy Applications Xiaoxi Huang*1 and Tewodros Asefa1,2 1 Department of Chemistry and Chemical Biology, 2 Department of Chemical and Biochemical Engineering

24) Functionalization of Nanostructured MgZnO with Improved Coverage and pH Resistance Yuan Chen*1, Sylvie Rangan2, H.T.Yi2, Elena Galoppini1, Robert Bartynski2 and Vitaly Podzorov2 1Department of Chemistry, Rutgers, Newark, 2Department of Physics and Astronomy and Laboratory for Surface Modification





Imaging Strain-Driven Surface Evolution with LEEM Dr. James B. Hannon Carbon Electronics, IBM T.J. Watson Research Center

2:10 Magnetic Charge and Magnetoelectricity in Hexagonal Manganites and

Ferrites Meng Ye* and David Vanderbilt Department of Physics and Astronomy

2:25 Investigation of Active Sites for Water Oxidation by Manganese Oxides

Paul F. Smith*, Benjamin Deibert, Shivam Kaushik, Graeme Gardner, Hao Wang, Jing Li and G. Charles Dismukes Department of Chemistry and Chemical Biology

2:40 Coverage Dependent Stability of the c(4x2) Phase of L-Alaninate/Cu(001)

Erkan Ciftlikli1 and B.J. Hinch1 1Department of Chemistry and Chemical Biology

2:55 – 3:10 Afternoon Break




3:10 The Solid State Conversion Reaction of Epitaxial CoO Films Studied by

STM and ARXPS Ryan Thorpe, Sylvie Rangan, Adrian Howansky and Robert A. Bartynski Department of Physics and Astronomy and Laboratory for Surface Modification

3:25 Structural Changes in Lithium Cobalt Oxides Induced by Water Oxidation

Catalysis Graeme Gardner*1, Jafar Al-Sharab2, Yong Bok Go1, Martha Greenblatt1 and G. Charles Dismukes1 1Department of Chemistry and Chemical Biology and 2Materials Science and Engineering

3:40 Zinc(II) Tetraphenylporphyrin Adsorption on Au(111): An Interplay

Between Molecular Self-Assembly and Surface Stress Charles Ruggieri*1, Sylvie Rangan, 1 Robert A. Bartynski 1 and Elena Galoppini2 1Department of Physics and Astronomy, 2Chemistry Department, Rutgers Newark

3:55 Water Absorption in Thermally Grown Oxides on SiC and Si

Can Xu*1,2, Gang Liu2, Boris Yakshinskiy2, Leszek Wielunski2, Torgny Gustafsson2, Joseph Bloch1,3, Sarit Dhar4 and Leonard C. Feldman1,2 1Institute for Advanced Materials, Devices and Nanotechnology, 2Department of Physics and Astronomy and Laboratory for Surface Modification, 3NRCN, Beer-Sheva, 84190, Israel, 4Department of Physics, Auburn University

4:10 Presentation of Theodore E. Madey Student Awards:

Best Poster Presentation Best Oral Presentation




ABSTRACTS FOR TALKS 9:05 Coupled Nonpolar-Polar Metal-Insulator Transition in 1:1 SrCrO3/SrTiO3

Superlattices: A First-Principles Study Yuanjun Zhou* and Karin Rabe Department of Physics and Astronomy

Using first principles calculations, we determined the epitaxial-strain dependence of the ground state of the 1:1 SrCrO3/SrTiO3 superlattice. The superlattice layering leads to significant changes in the electronic states near the Fermi level, derived from Cr t2g orbitals. An insulating phase is found when the tensile strain is greater than 2.2% relative to unstrained cubic SrTiO3. The insulating character is shown to arise from Cr t2g orbital ordering, which is produced by an in-plane polar distortion that couples to the superlattice d-bands and is stabilized by epitaxial strain. This effect can be used to engineer the band structure near the Fermi level in transition metal oxide superlattices.

9:20 Magnetoelectricity in Fe Langasite Sergey Artyukhin*, David Vanderbilt and Sang-Wook Cheong Department of Physics and Astronomy Materials with coexisting and interacting switchable ferroic orders - multiferroics -- are the subject of intense investigations due to their existing and potential applications in spintronics and information storage technology. Here we investigate the much debated magnetically induced polarization and magneto-electric effect in the hexagonal Fe-langasite Ba3NbFe3Si2O14 with distorted triangular layers of magnetic Fe ions. We propose a simple model for these phenomena, and discuss how application of the magnetic field induces a toroidal moment, responsible for the peculiar magnetoelectric effect in this material.

9:35 High-Carrier-Density Phase in LaTiO3/SrTiO3 Superlattices

Se Young Park1, Karin M. Rabe1 and Andrew J. Millis2 1Department of Physics & Astronomy and 2Department of Physics, Columbia University

We investigate superlattices composed of alternating layers of Mott insulating LaTiO3 and band insulating SrTiO3 from first principles, using the density functional theory plus U (DFT+U) method. For values of U above a critical threshold, we find that melting of the Mott-insulating phase can extend from the interface into the LaTiO3 layer, resulting in a sheet carrier density exceeding the density of 0.5 electrons per in-plane unit cell found in previous studies. The critical U for the melting transition is larger than the critical Coulomb correlation required for the insulating LaTiO3, suggesting the existence of a high sheet carrier density phase in LaTiO3/SrTiO3 superlattices. The effects of in-plane strain and varying layer thickness on the melting transition are discussed. For insulating superlattices, we study the strain dependence of the polarization and its relation to near-interface local atomic distortions. Support: DOE ER 046169, ONR N00014-11-0666





Electronic Structure of Hybrid Organic Inorganic Perovskites Interfaces Prof. Antoine Kahn Department of Electrical Engineering, Princeton University Hybrid Organic Inorganic Perovskites (HOIP) have recently led to stunningly rapid progress in photovoltaics. HOIP solar cells include interfaces with organic and inorganic electron and hole transport layers (ETL, HTL), which must be carefully optimized in order to insure high efficiency devices. This talk first reviews measurements of the electronic structure of HOIPs, specifically methylammonium lead halides (MAPbX, X=Br3, I3, I3-xClx), with evaluation of their valence and conduction band edges, ionization energy and electron affinity (IE, EA) [1]. We then turn to HOIP interfaces. The electronic structure of “conventional” TiO2/HOIP/organic HTL and “inverted” NiOx/HOIP/organic ETL cells are given. Results show the role of interface energetics in terms of carrier loss-less extraction from, or confinement in, the perovskite layer [2]. The shift of the HOIP Fermi level from the top of the gap in TiO2/HOIP to the lower half of the gap in NiOx/HOIP [3] is discussed for its implications in terms of density of gap states in these materials. [1] P. Schulz et al., Energ. & Envir. Sci. 7, 1377 (2014) [2] E. Edri et al., J. Phys. Chem. Lett., 5, 429 (2014) [3] P. Schulz et al., Adv. Mat. Interf. (under review)

11:00 Kondo Breakdown In Topological Kondo Insulators

Onur Erten1, Victor Alexandrov2 and Piers Coleman1 1Condensed Matter Theory, 2Institute for Advanced Studies, Princeton Motivated by the observation of light surface states of SmB6, we examine the effects of surface Kondo breakdown in topological Kondo insulators. We present both numerical and analytic results, which show that the decoupling of the localized moments at the surface disturbs the compensation between light and heavy electrons and dopes the Dirac cone. Dispersion of these uncompensated surface states are dominated by inter-site hopping, which leads to a much lighter quasiparticles. These surface states are also highly durable against effects of magnetism and decreasing the thickness of the sample.




11:15 Chirality Density Wave of the “Hidden Order” Phase in URu2Si2 H.-H. Kung*1, R. E. Baumbach2, E. D. Bauer2, V. K. Thorsmolle1, W.-L. Zhang1, K. Haule1, J. A. Mydosh3 and G. Blumberg1 1Department of Physics and Astronomy, 2Los Alamos National Lab, 3Kamerlingh Onnes Laboratory, Leiden University The heavy fermion superconductor URu2Si2 displays a second-order phase transition into the so called “hidden order” (HO) state at THO=17.5K before entering an unconventional superconducting state below Tc=1.5K. We use polarization resolved Raman spectroscopy to specify the symmetries of the low energy excitations. Below THO, the response function develops a gap of about 6meV, and a sharp in-gap mode centered at 1.6meV in the chiral symmetry channel. The symmetry dependence of this mode suggests that the HO parameter breaks local vertical and diagonal reflection symmetries. This results in the uranium 5f states with distinct chiral properties, ordering to a commensurate chirality density wave ground state. Reference: Kung et al., "Chirality density wave of the `hidden order’ phase in URu2Si2", Science, 347, 1339 (2015)

11:30 Topological Insulator with Suppressed Bulk and Dominant Topological

Surface State Conduction Nikesh Koirala*1, Maryam Salehi2, Jisoo Moon1, Namrata Bansal3 and Seongshik Oh1 1Department of Physics and Astronomy, 2Department of Materials Science and Engineering and 3Department of Electrical Engineering Topological insulators (TIs) hold much promise in applications and exploration of novel physics due to their exotic topological surface states (TSSs) and insulating bulk. In real TI materials such as Bi2Se3 major bottleneck in such pursuits are: (1) the bulk is conducting rather than insulating and (2) carrier mobility is low, both of which arise due to crystal defects. Here by minimizing these defects in Bi2Se3 thin films by growing them on atomically engineered buffer layer, we have simultaneously suppressed bulk conduction and achieved record high mobility TSSs conduction channel. These high quality TIs may pave a way to a new generation of experiments and applications in TI research.




11:45 Charge Transfer at Si-PEDOT:PSS Interface Xiaoming Wang 1, Mona Zebarjadi 1, 2 and Keivan Esfarjani 1, 2 1Institute for Advanced Materials, Devices and Nanotechnology and 2Mechanical Engineering Here we present both semi-classical and first-principle calculations of charge transfer at silicon and PEDOT:PSS (poly(3,4-ethylenedioxythiophene) polystyrene sulfonate) interface, which shows that PEDOT:PSS is an effective hole injector for transferring holes to silicon channel, this kind of doping can preserve the mobility of silicon, which is preferred for thermoelectrics. The results provide us a guidance to design high performance thermoelectric materials.


Imaging Strain-Driven Surface Evolution with LEEM Dr. James B. Hannon Carbon Electronics, IBM T.J. Watson Research Center During heteroepitaxial growth, lattice mismatch between the growing film and the substrate inevitably leads to interfacial strain. Understanding how surfaces react to interfacial strain has many practical applications, from enhancing transistor performance to preventing delamination. Interfacial strain can also lead to the formation of novel `self-organized’ structures such as quantum dots. In this talk I will review experiments in which low-energy electron microscopy (LEEM) was used to image the evolution of surfaces during growth in real time. One advantage of LEEM is that the real-space surface evolution can be directly modeled, giving powerful insight into the thermodynamics and kinetics of thin film growth. I will begin with a review of experiments on Si surfaces at elevated temperature. In these 2D systems, strain arises because the surface support two different surface phases [1]. I will also review recent experiments [2] on 3D growth at the Si(001) surface in which strain drives a massive surface restructuring. [1] “Anomalous Spiral Motion of Steps near Dislocations on Silicon Surfaces," J.B. Hannon, V.B. Shenoy, and K.W. Schwarz, Science 313 (2006) 5791. [2] “Strain-Driven Mound Formation of Substrate under Epitaxial Nanoparticles,” T. Gupta et al, Nano Lett., 15 (2015) 34.




2:10 Magnetic Charge and Magnetoelectricity in Hexagonal Manganites and

Ferrites Meng Ye* and David Vanderbilt Department of Physics and Astronomy Magnetoelectric (ME) materials are of fundamental interest and broad potential applications. Commonly the dominant contribution to the ME response is the lattice-mediated one, which is proportional to the dynamical magnetic charge Zm. A previous study has shown that exchange striction acting on noncollinear spins induces much larger magnetic charges than when Zm is driven by spin-orbit coupling. In hexagonal manganites RMnO3 and ferrites RFeO3 (R=Ho-Lu), the spins of transition-metal ions form a 120° arrangement through super-exchange. Here we present a theoretical study of the magnetic charges, and of the spin-lattice and spin-electronic ME constants, in these hexagonal manganites and ferrites, clarifying the conditions under which exchange striction leads to enhanced Zm and anomalously large in-plane spin-lattice ME effects.

2:25 Investigation of Active Sites for Water Oxidation by Manganese Oxides

Paul F. Smith*, Benjamin Deibert, Shivam Kaushik, Graeme Gardner, Hao Wang, Jing Li and G. Charles Dismukes Department of Chemistry and Chemical Biology Manganese oxides occur as minerals in at least 30 different crystal structures, providing a “high throughput” system to explore the significance of atomic positions on many applications. The primary descriptor for catalytic oxidation of water is shown to be structural distortions from Mn3+ content, as a result of surveying eight polymorphs. Paradoxically, oxidation of Mn4(OMe)4(nic)4 yields a catalytically active oxide with many characteristics of an inactive, all-Mn4+ polymorph. We show this new material contains 50% metastable Mn3+, and that preventing Mn3+ from disproportionation is an effective strategy towards designing better catalysts. The optimized structure for Mn3+ will be presented following comparison of Mn3+-containing polymorphs (Mn2O3, Mn3O4, β-MnOOH, γ-MnOOH).

2:40 Coverage Dependent Stability of the c(4x2) Phase of L-Alaninate/Cu(001)

Erkan Ciftlikli1 and B.J. Hinch1 1Department of Chemistry and Chemical Biology L-Alanine dissociatively adsorbs on Cu(001) at ambient temperatures producing a c(4x2) phase of alaninate [NH2C(CH3)HCOO] species. At saturation, 0.25ML L-Ala/Cu(001) is stable upon annealing up to 453-463K. The onset of nucleation of the c(4x2) phase occurs in early stages of RT deposition when the alaninate coverage is as low as 0.01 ML. However, in contrast to the thermally stable saturated c(4x2) surface, at sub-saturation coverages the surfaces exhibit slow loss of the ordered phase. Helium reflectivity measurements show a reduction of c(2x4) diffraction intensities even at RT. We will discuss the kinetics of the nucleation and dissolution processes occurring on the L-Ala/Cu(001) surfaces.




3:10 The Solid State Conversion Reaction of Epitaxial CoO Films Studied by STM and ARXPS Ryan Thorpe, Sylvie Rangan, Adrian Howansky and Robert A. Bartynski Department of Physics and Astronomy and Laboratory for Surface Modification Cobalt (II) oxide is a promising electrode material for Li-ion conversion batteries, undergoing the following reversible redox reaction upon exposure to lithium:

2Li + CoO ↔ Li2O + Co0. In order to characterize the phase progression and morphology of the Li-CoO reaction, epitaxial CoO(100) and (111) films were exposed to lithium in UHV. The early stages of the reaction were then characterized with STM, while the diffusion of Li into the films and concomitant reduction of CoO was quantified using ARXPS. For CoO(111) films, the conversion reaction spread from step edges and defect sites across the surface of the film and then proceeded in a layer-by-layer fashion into the bulk. Conversely, the Li-CoO(100) reaction proceeded deep into the film at preferential reaction sites before spreading across the rest of the surface.

3:25 Structural Changes in Lithium Cobalt Oxides Induced by Water Oxidation

Catalysis Graeme Gardner*1, Jafar Al-Sharab2, Yong Bok Go1, Martha Greenblatt1 and G. Charles Dismukes1 1Department of Chemistry and Chemical Biology and 2Materials Science and Engineering Lithium cobalt oxide has long been the archetypal compound for use in rechargeable lithium ion batteries, due to the redox flexibility of Co and lability of Li from the layered rhombohedral crystal. However, it has been observed that the degredation in lifetime is associated with sub-surface structural reorganization to a cubic phase. In the past few years, LiCoO2 has also been explored in water oxidation catalysis. In fact the low-temperature cubic phase is highly active compared to the high-temperature layered phase. However, in electrochemically driven water oxidation, it is observed that layered LiCoO2 also undergoes reconstruction associated with Li loss as in battery cycling, resulting in an active cubic surface phase.




3:40 Zinc(II) Tetraphenylporphyrin Adsorption on Au(111): An Interplay Between Molecular Self-Assembly and Surface Stress Charles Ruggieri*1, Sylvie Rangan, 1 Robert A. Bartynski 1 and Elena Galoppini2 1Department of Physics and Astronomy, 2Chemistry Department, Rutgers Newark The interaction between zinc(II) tetraphenylporphyrin (ZnTPP) molecules and the Au(111) surface is investigated using scanning tunnel microscopy, from initial adsorption sites to monolayer self-assembly, with a particular emphasis on its relation to the surface atomic structure reorganization. Coverage-dependent ZnTPP adsorption behavior is discussed for sub-monolayer to near-monolayer coverages. Moreover alteration of the Au(111) surface reconstruction domain size is observed, caused by an adsorbate-induced reduction of the Au(111) surface stress anisotropy. This behavior is not universal for the monolayer –ZnTPP/Au(111) system as a monolayer prepared from the desorption of a ZnTPP multilayer does not alter the domain size of the Au(111) surface. In this case, the additional thermal energy leads to a complete rearrangement of the self-assembled structure, and the surface stress anisotropy returns to its value for the clean surface.

3:55 Water Absorption in Thermally Grown Oxides on SiC and Si Can Xu*1,2, Gang Liu2, Boris Yakshinskiy2, Leszek Wielunski2, Torgny Gustafsson2, Joseph Bloch1,3, Sarit Dhar4 and Leonard C. Feldman1,2 1Institute for Advanced Materials, Devices and Nanotechnology, 2Department of Physics and Astronomy and Laboratory for Surface Modification, 3NRCN, Beer-Sheva, 84190, Israel, 4Department of Physics, Auburn University The structure and chemical compatibility of In2Se3 (a band insulator) and Bi2Se3 (a 3D topological insulator) suggests possible promising applications of In2Se3/Bi2Se3 devices. Indiffusion of In into Bi2Se3 will affect the transport properties. We have grown In2Se3/Bi2Se3 thin films on sapphire by Molecular Beam Epitaxy at different temperatures. Our Medium Energy Ion Scattering data show that higher growth temperature increases In diffusion while the Bi2Se3 mobility decreases.




ABSTRACTS FOR POSTERS

1) Temperature Programmed Desorption of Ionic Liquid from Metals

Aleksandra B. Biedron*1, Joseph Bloch3, Sylvie Rangan2, Edward W. Castner, Jr.1 and Eric Garfunkel1 1Department of Chemistry and Chemical Biology, Nanotechnology for Clean Energy IGERT, 2Department of Physics and Astronomy and Laboratory for Surface Modification, 3NRCN, Beer-Sheva, Israel Ionic liquids (ILs) are a broad new class of materials with unique properties that hold great promise for a range of applications. This work examines chemical and thermal properties of the interaction of ILs with copper and gold substrates, focusing on the interface. Ultrathin films were prepared by physical vapor deposition and characterized with temperature programed desorption. Desorption spectra suggest dissociative IL reactions with copper, although not with the more noble metal gold.

2) Perovskite-Related Oxynitrides as Photoanodes in Photoelectrochemical

Cells Bin Liu*, Eric Garfunkel, Martha Greenblatt and G. Charles Dismukes Department of Chemistry and Chemical Biology We are aiming to develop a tandem photoelectrochemical (PEC) cell, in which two solar absorbers (semiconductors) in conjunction with two catalysts (oxygen and hydrogen evolution catalysts) will be used to split water, to significantly increase the solar-to-hydrogen conversion efficiency up to 10%. However, the lack of stable semiconductors suitable as photoanode is the first problem that we encountered and aim to solve. We propose to use perovskite oxynitrides (ABO3-xNx) as the photoanode materials. In this poster, I will summarize the current state of the art in terms of syntheses and critical properties of oxynitrdes from published articles and our own research.




3) Alkyl-Aryl Coupling Catalyzed by Tandem Systems of Pincer-Ligated Iridium Complexes and Zeolites Bo Li*1, Long van Dinh1, Akshai Kumar1, Fuat E. Celik2, Alan S. Goldman1 1Department of Chemistry and Chemical Biology, 2Department of Chemical and Biochemical Engineering Our approach to the development of a system for the catalysis of alkyl-aryl coupling was based on pincer-iridium-catalyzed acceptorless dehydrogenation of an alkyl group, followed by Friedel-Crafts coupling of the resulting olefin with arene, as show in the scheme below. Further dehydrogenation can give us more unsaturated products, such as dihydro-methylnaphthalene and methylnaphthalene.

4) Generation Dependent Ultrafast Charge Transfer Dynamics in Pyrene-

Viologen Dendrons Zheng Gong*1, Jianhua Bao1, Takehiro Kawauchi2 and Piotr Piotrowiak1 1Department of Chemistry, 2Tokyo Institute of Technology, Department of Chemistry and Materials Science, Tokyo Institute of Technology Charge-transfer processes in a series of pyrene-viologen dendrons were studied using femtosecond pump-probe spectroscopy. The transient absorption spectra show the generation of pyrene radical cations at 465 nm and methyl viologen radical cations at 600 nm, therefore, the time-dependent absorbance change was recorded at these two wavelengths. The fitting results indicate a fast charge separation and geminate recombination between pyrene and the attached methyl viologen within τ1= 3 ps, as well as a slower decay τ2= 5-20 ps which is associated with electron hopping between adjacent methyl viologens. Furthermore, the solvent effect on charge-transfer reaction was investigated by measuring the decay in acetonitrile and propionitrile. The polarity dependence of τ1 and τ2 has been interpreted with the help of Marcus theory.

5) HafSOx Radiation Mechanistic Study with Low Energy Electrons Exposure

Feixiang Luo*1, Boris Yakshinskiy2, Alexei Ermakov1 and Eric Garfunkel1 1Department of Chemistry and Chemical Biology, 2Department of Physics and Astronomy and Laboratory for Surface Modification There is a strong need for new lithographic resists sensitive to EUV radiation that can produce higher resolution features than current organic ones. HafSOx is a new inorganic resist that has attracted much attention. Unfortunately the radiation chemistry associated with HafSOx development is still not fully understood. Since the secondary electrons (SEs) originating from EUV photons are thought to be the key species changing the film chemistry, we developed a low energy e-beam system to examine resist performance with electrons.




6) Characterization of LiFePO4 Cathode Nanocrystals by STEM/EELS Analysis Joseph Schneider-Haefner*1, Yuxuan Wang2, Jiye Fang2, Natasha Chernova2, Doug Su3 and Frederic Cosandey1 1Department of Materials Science and Engineering, 2Materials Science Department, Binghamton University, 3CFN, Brookhaven National Laboratory LiFePO4 is currently in use as cathode material for rechargeable Li-Ion batteries because of its safety, low cost and high charge-discharge rate capabilities. In this study, we have investigated the delithiation patterns within individual particles. The Fe L3/L2 ratio and O Pre-K/K ratio were mapped on the EELS Spectrum Images to distinguish delithiated and lithiated LiFePO4.

7) Helium Atom Diffraction of Cyclooctatetraene on Cu (001)

John L. Wieczorek*, Erkan Z. Ciftlikli and B.J. Hinch Department of Chemistry and Chemical Biology Cyclooctatetraene (C8H8, COT) adsorbs readily on a copper (001) surface at room temperature at coverages below one monolayer. Helium atom scattering exhibits diffraction from COT coverage-dependent high-order-commensurate phases. We see the first evidence of ordering below 0.05% of a monolayer. Thermal annealing can be used to increase long range order, or possible molecular desorption. Complete desorption is apparent above 190oC. Thermally induced disordering is observed at temperatures above 150oC. The possible influence of molecular COT conformational changes will also be addressed.

8) Nanoscale Synthesis of Nickel Phosphides as Novel HER Electrocatalysts Ajay R. Kashi*, Anders B. Laursen, Bin Liu, Mariana J. Whitaker, Martha Greenblatt and G. Charles Dismukes Department of Chemistry and Chemical Biology Producing renewable hydrogen (H2) is an imposing challenge for developing sustainable energy systems. Low stoichiometric ratios of nickel phosphides, such as Ni5P4, have been shown to be catalytically active for the hydrogen evolution reaction (HER) achieved by the splitting of water. Ni5P4 demonstrates exceptional efficiency and stability in both acidic and alkaline electrolytes with Tafel slope and turnover frequency (TOF) close to that of standard noble metal catalysts as Pt. Synthesis of the nanoparticles is carried out by high-temperature solid-state, hydrothermal, and solvothermal methods. Characterization of these methods will allow better understanding of how to scale up production of phase-pure Ni2P and Ni5P4 nanoparticles for high-surface area HER electrodes with cheaper, earth-abundant materials.




9) Ultrasmall Palladium Nanoparticles Supported on Amine-Functionalized SBA-15 as Efficient Catalysts for Hydrogen Evolution from Formic Acid Katherine Koh*1, Jung-Eun Seo3, Jin Hee Lee3, Anandarup Goswami1,2, Chang Won Yoon3 and Tewodros Asefa1,2 1Department of Chemistry and Chemical Biology, 2Department of Chemical and Biochemical Engineering, 3Fuel Cell Research Center, Korea Institute of Science and Technology

The success of the so-called “hydrogen economy” for large-scale applications will ultimately depend on efficient and sustainable production, storage and distribution of hydrogen. Owing to its low toxicity, high volumetric H2 storage capacity and availability both from renewable resources (e.g., biomass) as well as nonrenewable resources (e.g., fossil fuel feedstocks), formic acid is one of the most favorable chemical hydrogen storage media for large-scale energy storage applications. However, for FA to become a viable hydrogen storage medium, efficient catalysts that enable it to release H2 at low cost are necessary. Herein we show a facile synthetic route to amine-functionalized nanoporous silica-supported ultrasmall Pd nanoparticles (SBA-15-Amine/Pd) that were highly active catalysts for formic acid dehydrogenation, producing hydrogen at ambient temperature with a high turn-over-frequency (TOF) of 293 h-1—which was among the highest TOFs ever reported for the reaction by a heterogeneous catalyst. We also show that the material is easily recyclable multiple times, without losing its catalytic activity. So, the catalyst we developed might contribute to some of the solutions of our sustainability challenges.

10) The Effect of Fe-Doping on the Electronic Structure and Activity of Nickel

Phosphide, Ni2P a Catalyst for H2 Evolution from Water Kelly R. Patraju*1, Anders B. Laursen1, Martha Greenblatt1 and G. Charles Dismukes1 1Department of Chemistry and Chemical Biology Nickel-phosphide Ni5P4 is an excellent catalyst comparable to the typical platinum (Pt) catalyst for hydrogen (H2) evolution. The catalyst Ni2P shows structural similarities and H2 evolution activity similar to that of Ni5P4. This study shows the tuning of the electron density of the active site of Ni2P by isostructural substitutional doping of iron (Fe) resulting in FexNi2-xP in the full range 0 < x < 2. The structure is investigated by PXRD and the electronegativity difference between Fe and Ni used to explain the changes in electronegativity on the active Ni site.




11) Title Ni5P4 a Game Changing H2 Evolution Catalyst Anders B. Laursen1, Kelly R. Patraju1, Mariana J. Whitaker1, Tapati Sarkar2, Nan Yao3, Kandalam V. Ramanujachary4, Martha Greenblatt1 and G. Charles Dismukes1 1Department of Chemistry and Chemical Biology, 2Uppsala University, Sweden, 3PRISM Imaging and Analysis Center, Princeton University, 4Department of Chemistry, Rowan University Hydrogen produced from fossil-free resources, e.g. electrocatalytic water-splitting, could not only introduce “the hydrogen economy” but is also an industrially relevant bulk chemical with a current ~108 ton annual production from natural gas. In electrochemical water-splitting platinum and nickel (or alloys thereof) are the electrocatalysts of choice for the hydrogen evolution reaction (HER) in acid and alkali, respectively. The scarcity of platinum, and the low efficiency of nickel, have greatly restricted the development of renewable hydrogen. Molecular nickel organophosphine complexes and more recently the crystalline solid Ni2P have proven highly active HER catalysts but both decompose during operation. Here we report, that the Ni5P4, outperforms Ni2P and is comparable to platinum in its electrical efficiency for HER (kinetics and intrinsic overpotential). Unlike for Ni2P, Ni5P4 is corrosion resistant in both strong acid and alkali during electrocatalysis. We will present a structural basis for the unusually high catalytic activity and corrosion resistance.

12) Investigation of Propene and Pentene Dimerization by Acid Zeolites

Longfei Chao* and Fuat E. Celik Department of Chemical and Biochemical Engineering C5 hydrocarbons, with limited commercial applications, are major byproducts of a number of commercially important processes. In the present study, multiple zeolites and reaction conditions are investigated to transform C5 olefins to C10 olefins that are more commercially valuable. Propene is studied as a common secondary product as well.

13) Biased Photoemission and Ab-Initio Studies of Metal-Insulator-

Semiconductor Structures Malathi Kalyanikar*1, Sylvie Rangan2, Junxi Duan2, Gang Liu3, Stephen Weitzner4, Robert Bartynski2, Eva Andrei2, Leonard Feldman3, Ismaila Dabo4 and Eric Garfunkel1 1Department of Chemistry and Chemical Biology, 2Department of Physics and Astronomy and Laboratory for Surface Modification, 3Institute for Advanced Materials, Devices and Nanotechnology, 4Department of Material Science and Engineering, Penn State University Electrostatic potential changes across thin films is of great importance for understanding properties of multilayer structures and devices. Studies of potential changes across metal-insulator-semiconductor systems can be performed using XPS with an external bias placed perpendicular to the surface. The shift in photoemission binding energies across graphene-SiO2-Si structures as a function of external bias is studied in this work. Complementary DFT calculations of metal/graphene systems are conducted to help understand the underlying electronic structure and potential profile.




14) Surface Phonons in the Superlattice of the Topological Insulator Bi2Se3 Maryam Salehi*1, H.-H. Kung2, N. Koirala2, M. Brahlek2, S. Oh2 and G. Blumberg2 1Department of Material Science and Engineering, 2Department of Physics and Astronomy and Laboratory for Surface Modification The Dirac surface states of the topological insulator Bi2Si3 has attracted a lot of interest since its recent discovery. However, very few attention has been given to their interaction with the surface phonon. We use polarization resolved Raman spectroscopy to study the symmetries of the low energy excitations in MBE grown Bi2Se3 thin films. By increasing the surface to volume ratio of Bi2Se3 through Bi2Se3-In2Se3 superlattice structure, we were able to detect two weak surface phonon modes. The energies are consistent with theoretical calculations incorporating electron-phonon interactions of the surface states.

15) The Rutgers UltraSTEM

Maureen Joel Lagos and Philip E. Batson Institute for Advanced Materials, Devices and Nanotechnology, Department of Materials Science and Engineering, Department of Physics and Astronomy and Laboratory for Surface Modification Recently, Rutgers University has become the house of one of the most advanced scanning transmission electron microscope (STEM) in the world. The RUTGERS UltraSTEM instrument is equipped with both aberration corrector and energy monochromator, which allows the physical exploration of phenomena over a wide energy range with both high spatial and energy resolution. Currently, our instrument has achieved angstrom resolution (~ 1 Å) and 10 meV of energy resolution at 60 KV. With this outstanding performance, we can perform studies of vibrational, plasmonic, interband transition and core-shell spectroscopy with atomic resolution. The remarkable capabilities of the new RUTGERS UltraSTEM are illustrated through a large variety of experimental results from ongoing collaborations with both internal and external researchers.

16) Capture and Release of Plasmonic Electrons in Ag@hexaniobate

Nanopeapod Assemblies Mengdi Liu1, John B. Wiley2 and Piotr Piotrowiak1 1Department of Chemistry, 2Department of Chemistry, University of New Orleans Photoinduced charge transfer in Ag@hexaniobate nanopeapod assemblies was studied using ultrafast pump-probe spectroscopy. The “nanopods” consist of thin potassium hexaniobate sheets tightly wound around linear arrays of metallic silver nanoparticles. Transient absorption spectra and decay dynamics were measured. The result show a very rapid hot-electron relaxation from above Fermi level of silver and a competing process of hot-electron injection into the conduction band of the hexaniobate scroll followed by slower charge recombination in the picosecond time domain. Direct capture of plasmonic electrons is of great interest in the fields of solar energy conversion, photocatalysis and optoelectronics.




17) Metallic 1T Phase MoS2 Nanosheets as Supercapacitor Electrode Materials Muharrem Acerce*, Damien Voiry and Manish Chhowalla Material Science and Engineering We show that chemically exfoliated nanosheets of metallic 1T phase MoS2 can electrochemically intercalate ions (H+, Li+, Na+ and K+) with high capacitance values up to ~700 F cm−3 in a variety of aqueous electrolytes. We also demonstrate that this material is suitable for in non-aqueous organic electrolytes, showing prime volumetric energy and power density values with high stability over 5,000 cycles. High electrochemical performance is mainly a result of their high electrical conductivity, hydrophillicity and the ability of dynamic expansion of layers via ion intercalation according to XRD analysis.

18) Increasing Visible-Light Photocatalytic Activity via Modification of TiO2

Photocatalysts Ashley M. Pennington*, Katelyn A. Dagnall, Deniz A. Dindi and Fuat E. Celik Department of Chemical and Biochemical Engineering Titanium Dioxide (TiO2), a metal oxide semiconductor, has high photocatalytic activity under ultraviolet illumination and is stable under catalytic conditions. We aim to modify the band gap, increasing activity under visible-light. Modified TiO2 is active for photocatalytic reforming of methanol, a model for biomass, producing hydrogen gas, a zero-emission fuel.

19) Understanding Electron Energy Loss Mechanisms in EUV Resists Using REELS and First-Principles Calculations Sylvie Rangan1, Robert A. Bartynski1, Amrit Narasimhan2 and Robert Brainard2 1Department of Physics and Astronomy and Laboratory for Surface Modifications, 2College of Nanoscale Science and Engineering University, Albany X-ray and UV photoemission spectroscopies have been performed on materials relevant to EUV resist materials and interpreted using ground states properties calculated for simple molecular models using ab-initio techniques. Additionally, the origin of energy loss mechanisms for low energy electrons (30 eV to 110 eV) in these materials has been investigated by comparing experimental reflection electron energy spectroscopy spectra to calculated absorption spectra.

20) A Click Approach to “STAR” Ruthenium-Sensitizer

Runkun Sun*, Hao Fan and Elena Galoppini Department of Chemistry, Rutgers, Newark

2, 2′-Bipyridine (bpy) derivatives has been widely used for the synthesis of Ruthenium complex using in Dye-sensitized solar cell (DSSC). The synthesis of several bpy derivatives involves several step low yield and tedious reactions. We proposed a new strategy with fewer steps and higher yields, which will promote the applications of 2, 2′-bipyridine derivatives. With these derivatives, we started the synthesis of a Ruthenium complex, which will be used for the DSSCs.




21) Selective Electrochemical Deposition of LiCoO2 and Its Properties as an Electrocatalyst for Water Oxidation/Oxygen Evolution Shinjae Hwang*, Graeme Gardner, Eric Garfunkel and G. Charles Dismukes Department of Chemistry and Chemical Biology, Institute for Advanced Materials, Devices and Nanotechnology The electrolytic splitting of water into hydrogen and oxygen is one strategy being explored for large-scale electrical energy storage/conversion from solar and wind energy sources. Nanoparticles of the cubic polymorph of LiCoO2 prepared by sol-gel methods were previously demonstrated to exhibit high activity for oxygen evolution reaction (OER), two orders of magnitude higher than the layered polymorph of LiCoO2 1. Here, we have developed an electrochemical method to selectively deposit cubic spinel LixCoO2 (0≤x≤1) as a film onto conducting substrates. The deposited film shows a low overpotential for the OER and exhibits long-term stability at 10 mA/cm2 current density in alkaline electrolyte (1 M NaOH). References: 1. Gardner, G. P.; Go, Y. B.; Robinson, D. M.; Smith, P. F.; Hadermann, J.; Abakumov, A.; Greenblatt, M.; Dismukes, G. C. Angew. Chem. Int. Ed. 2012, 51, 1616

22) Characterization of Catalysts Using Helium Ion Microscopy and Temperature Programmed Desorption

Viacheslav Manichev*1, Can Xu1, Hao Wang1, Wenhua Chen1, Leonard Feldman1,2, Torgny Gustafsson1 and Robert A. Bartynski1

1Department of Physics and Astronomy and Laboratory for Surface Modification, 2Institute for Advanced Materials Devices and Nanotechnology

Using our newly established helium ion microscopy (HIM), we have obtained high-resolution images of industrial catalysts prepared by various methods. HIM, has also been used to characterize the morphology of adsorbate-covered faceted Re(12-31) with results consistent with reciprocal space measurement by low energy electron diffraction (LEED) performed under UHV condition. Our results demonstrate that HIM is a powerful technique to quickly image the morphology of both industrial catalysts and model catalysts. Temperature programmed desorption (TPD) was used to characterize reactivity and selectivity in ammonia oxidation of model Ir catalysts of planar Ir(210) and faceted Ir(210) exposing three-sided pyramids. Evidence has been found for the formation of N2O from both surfaces, which is the first observation of N2O production in catalytic ammonia oxidation under UHV conditions (




23) Yeast Cells-Derived Hollow Heteroatom-Doped Carbon Microparticles for Sustainable Electrocatalysis and Renewable Energy Applications Xiaoxi Huang*1 and Tewodros Asefa1,2 1 Department of Chemistry and Chemical Biology, 2 Department of Chemical and Biochemical Engineering The use of renewable resources to make various synthetic materials is increasing in order to meet some of our sustainability challenges. We show that yeast cells can be thermally transformed into hollow, core-shell heteroatom-doped carbon microparticles that can effectively electrocatalyze the oxygen reduction and hydrazine oxidation reactions, reactions that are highly pertinent to fuel cells or renewable energy applications. We also show that yeast cell walls, which can be separated from the cells, can produce carbon materials with electrocatalytic activity for both reactions, albeit with lower activity compared with former one. The results reveal that the intracellular components of the yeast cells are indirectly responsible for the latter's higher electrocatalytic activity, by providing it with more heteroatom dopants. The synthetic method we report here can serve as a general route for the synthesis of (electro) catalysts using microorganisms as raw materials.

24) Functionalization of Rubrene Single Crystal with Self Assembled Monolayers Yuan Chen*1, Sylvie Rangan2, H.T.Yi2, Elena Galoppini1, Robert Bartynski2 and Vitaly Podzorov2 1Department of Chemistry, Rutgers, Newark, 2Department of Physics and Astronomy and Laboratory for Surface Modification Organic semiconductors such as polyaromatic hydrocarbons are widely applied in new types of sensors, OLED, OFET and other electronic devices. Rubrene single crystal is a p-type semiconductor that has the highest field-effect hole mobility as large as 20 cm2V-1s-1. Such electronic properties that depend on the surface properties of the semiconductor can be tuned by effective surface functionalization. We report the use of self-assembled molecules such as (3-bromopropyl) trichlorosilane and 4-bromobenzenediazonium tetrafluoroborate to functionalize rubrene single crystal through the forming of permanent strong covalent bond. The functionalized rubrene single crystal showed improved electronic properties.

TWENTY-NINTH ANNUAL SYMPOSIUMof theLABORATORY FOR SURFACE MODIFICATIONRutgers, the State University of New JerseyFiber Optics Auditorium10:20 **HIGHLIGHT PRESENTATION**11:15 Chirality Density Wave of the “Hidden Order” Phase in URu2Si2H.-H. Kung*1, R. E. Baumbach2, E. D. Bauer2, V. K. Thorsmolle1, W.-L. Zhang1, K. Haule1, J. A. Mydosh3 and G. Blumberg111:30 Topological Insulator with Suppressed Bulk and Dominant Topological Surface State ConductionNikesh Koirala*1, Maryam Salehi2, Jisoo Moon1, Namrata Bansal3 and Seongshik Oh11) Temperature Programmed Desorption of Ionic Liquid from Metals2) Perovskite-Related Oxynitrides as Photoanodes in Photoelectrochemical CellsBin Liu*, Eric Garfunkel, Martha Greenblatt and G. Charles DismukesKatherine Koh*1, Jung-Eun Seo3, Jin Hee Lee3, Anandarup Goswami1,2, Chang Won Yoon3 and Tewodros Asefa1,21Department of Chemistry and Chemical Biology, 2Department of Chemical and Biochemical Engineering, 3Fuel Cell Research Center, Korea Institute of Science and Technology14) Surface Phonons in the Superlattice of the Topological Insulator Bi2Se3Maryam Salehi*1, H.-H. Kung2, N. Koirala2, M. Brahlek2, S. Oh2 and G. Blumberg224) Functionalization of Nanostructured MgZnO with Improved Coverage and pH Resistance1:30 **HIGHLIGHT PRESENTATION**2:10 Magnetic Charge and Magnetoelectricity in Hexagonal Manganites and Ferrites2:25 Investigation of Active Sites for Water Oxidation by Manganese OxidesPaul F. Smith*, Benjamin Deibert, Shivam Kaushik, Graeme Gardner, Hao Wang, Jing Li and G. Charles DismukesDepartment of Chemistry and Chemical Biology2:40 Coverage Dependent Stability of the c(4x2) Phase of L-Alaninate/Cu(001)3:25 Structural Changes in Lithium Cobalt Oxides Induced by Water Oxidation Catalysis3:40 Zinc(II) Tetraphenylporphyrin Adsorption on Au(111): An Interplay Between Molecular Self-Assembly and Surface StressCharles Ruggieri*1, Sylvie Rangan, 1 Robert A. Bartynski 1 and Elena Galoppini29:20 Magnetoelectricity in Fe Langasite9:35 High-Carrier-Density Phase in LaTiO3/SrTiO3 Superlattices11:30 Topological Insulator with Suppressed Bulk and Dominant Topological Surface State ConductionNikesh Koirala*1, Maryam Salehi2, Jisoo Moon1, Namrata Bansal3 and Seongshik Oh111:45 Charge Transfer at Si-PEDOT:PSS Interface2:25 Investigation of Active Sites for Water Oxidation by Manganese OxidesPaul F. Smith*, Benjamin Deibert, Shivam Kaushik, Graeme Gardner, Hao Wang, Jing Li and G. Charles DismukesDepartment of Chemistry and Chemical BiologyManganese oxides occur as minerals in at least 30 different crystal structures, providing a “high throughput” system to explore the significance of atomic positions on many applications. The primary descriptor for catalytic oxidation of water is shown...2:40 Coverage Dependent Stability of the c(4x2) Phase of L-Alaninate/Cu(001)3:25 Structural Changes in Lithium Cobalt Oxides Induced by Water Oxidation CatalysisCharles Ruggieri*1, Sylvie Rangan, 1 Robert A. Bartynski 1 and Elena Galoppini21) Temperature Programmed Desorption of Ionic Liquid from MetalsIonic liquids (ILs) are a broad new class of materials with unique properties that hold great promise for a range of applications. This work examines chemical and thermal properties of the interaction of ILs with copper and gold substrates, focusing o...2) Perovskite-Related Oxynitrides as Photoanodes in Photoelectrochemical CellsBin Liu*, Eric Garfunkel, Martha Greenblatt and G. Charles Dismukes7) Helium Atom Diffraction of Cyclooctatetraene on Cu (001)Katherine Koh*1, Jung-Eun Seo3, Jin Hee Lee3, Anandarup Goswami1,2, Chang Won Yoon3 and Tewodros Asefa1,21Department of Chemistry and Chemical Biology, 2Department of Chemical and Biochemical Engineering, 3Fuel Cell Research Center, Korea Institute of Science and TechnologyThe success of the so-called “hydrogen economy” for large-scale applications will ultimately depend on efficient and sustainable production, storage and distribution of hydrogen. Owing to its low toxicity, high volumetric H2 storage capacity and avail...Maryam Salehi*1, H.-H. Kung2, N. Koirala2, M. Brahlek2, S. Oh2 and G. Blumberg223) Yeast Cells-Derived Hollow Heteroatom-Doped Carbon Microparticles for Sustainable Electrocatalysis and Renewable Energy Applications

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