A5042637448- Molecular Junctions and Nanostructures
- Quantum Dots Synthesis And Properties
- Nanocluster Synthesis and Applications
- Boron Compounds in Chemistry
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- 2D Materials and Applications
- Machine Learning in Materials Science
- Microbial Community Ecology and Physiology
- Force Microscopy Techniques and Applications
- Crystallization and Solubility Studies
- Graphene research and applications
- Advanced biosensing and bioanalysis techniques
- Advanced Proteomics Techniques and Applications
California NanoSystems Institute
2014-2018
University of California, Los Angeles
2014-2018
When alkanethiolate self-assembled monolayers on Au{111} are exchanged with alkaneselenols from solution, replacement of thiolates by selenols is rapid and complete, well described perimeter-dependent island growth kinetics. The monolayer structures change as selenolate coverage increases, being epitaxial consistent the initial thiolate structure to characteristic structures. At room temperature at positive sample bias in scanning tunneling microscopy, selenolate–gold attachment labile,...
Carboranethiol molecules self-assemble into upright molecular monolayers on Au{111} with aligned dipoles in two dimensions. The positions and offsets of each molecule's geometric apex local dipole moment are measured correlated sub-Ångström precision. Juxtaposing simultaneously acquired images, we observe monodirectional between the apexes extrema. We determine orientations using efficient new image analysis techniques find to be highly defect tolerant, crossing domain boundaries substrate...
We use simple acid-base chemistry to control the valency in self-assembled monolayers of two different carboranedithiol isomers on Au{111}. Monolayer formation proceeds via Au-S bonding, where manipulation pH prior or during deposition enables assembly dithiolate species, monothiol/monothiolate combination. Scanning tunneling microscopy (STM) images identify distinct binding modes each unmodified monolayer, simultaneous spectroscopic imaging confirms dipole offsets for mode. Density...
The p-carborane cluster analogue of p-mercaptobenzoic acid, 1-HS-12-COOH-1,12-C2B10H10, has been synthesized and characterized using nuclear magnetic resonance spectroscopy, single-crystal X-ray diffraction analysis, quantum-chemical calculations, scanning tunneling microscopy. structure selected packing aspects are discussed presented in comparison with the two-dimensional periodic arrangements. Scanning micrographs, recorded under ambient conditions, used to compare pure monolayers...
Abstract Comprehensive assessment of the flow genetic information through multi-omic data integration can reveal molecular consequences variation underlying human disease. Next generation sequencing (NGS) is used to identify variants and characterize gene function (e.g. transcriptome epigenome), while mass spectrometry assess proteome characterization protein abundances, modifications, interactions. A new plasma profiling platform, Proteograph࣪ Product Suite, leverages multiple nanoparticles...