A5073852514- X-ray Diffraction in Crystallography
- Nanocluster Synthesis and Applications
- Crystallization and Solubility Studies
- Perovskite Materials and Applications
- Inorganic Fluorides and Related Compounds
- Quantum Dots Synthesis And Properties
- 2D Materials and Applications
- Enzyme Structure and Function
- Atomic and Subatomic Physics Research
- Chalcogenide Semiconductor Thin Films
- Metal-Organic Frameworks: Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Advanced X-ray Imaging Techniques
- Molecular Junctions and Nanostructures
- Superconducting Materials and Applications
- Crystallography and molecular interactions
- Magnetism in coordination complexes
- Electrocatalysts for Energy Conversion
- Organic Electronics and Photovoltaics
- Organometallic Compounds Synthesis and Characterization
- Catalysts for Methane Reforming
- Supramolecular Chemistry and Complexes
- Subcritical and Supercritical Water Processes
- Surface Chemistry and Catalysis
- Force Microscopy Techniques and Applications
Linac Coherent Light Source
2024
SLAC National Accelerator Laboratory
2024
University of Connecticut
2020-2024
Lawrence Berkeley National Laboratory
2018-2020
Berkeley College
2020
Abstract Inorganic–organic hybrid materials represent a large share of newly reported structures, owing to their simple synthetic routes and customizable properties 1 . This proliferation has led characterization bottleneck: many are obligate microcrystals with low symmetry severe radiation sensitivity, interfering the standard techniques single-crystal X-ray diffraction 2,3 electron microdiffraction 4–11 Here we demonstrate small-molecule serial femtosecond crystallography (smSFX) for...
Silver metal exposed to the atmosphere corrodes and becomes tarnished as a result of oxidation precipitation an insoluble salt. Tarnish has so poor reputation that word itself connotes corruption disrespectability; however, tarnishing is facile synthetic approach for preparing thin metal-sulfide films on silver or copper might be exploited prepare more elaborate materials with desirable optoelectronic properties. In this work, we luminescent semiconducting mithrene, metal–organic...
New synthetic hybrid materials and their increasing complexity have placed growing demands on crystal growth for single-crystal X-ray diffraction analysis. Unfortunately, not all chemical systems are conducive to the isolation of single crystals traditional characterization. Here, small-molecule serial femtosecond crystallography (smSFX) at atomic resolution (0.833 Å) is employed characterize microcrystalline silver n-alkanethiolates with various alkyl chain lengths free electron laser...
Crystalline metal–organic chalcogenolate assemblies are a class of semiconducting hybrid nanomaterials that consist well-defined arrays nanostructured inorganic coordination polymers with supramolecular lattice organic ligands. Growing crystals periodic chalcogenolates at biphasic liquid–liquid interfaces has been used to prepare materials for potential applications in sensing, catalysis, mechanochemistry, light-emitting devices, and photovoltaics. However, distinct lack systematic framework...
Two-dimensional (2D) excitons arise from electron-hole confinement along one spatial dimension. Such excitations are often described in terms of Frenkel or Wannier limits according to the degree exciton localization and surrounding dielectric environment. In hybrid material systems, such as 2D perovskites, complex underlying interactions lead an intermediate nature, whose description lies somewhere between two limits, a better physical is needed. Here, we explore photophysics tuneable...
Crystal Engineering The ease of functionalization organic groups attached to inorganic layers in metal–organic chalcogenolates (MOChas) makes them interesting targets for crystal engineering. In article number 2300110, Aaron S. Brewster, James Nathan Hohman, and co-workers report the preparation microcrystalline powders silver 2-, 3-, 4-fluorobenzenethiolates resolve their structures by small-molecule serial femtosecond X-ray crystallography. These compounds enable emergence role...
Controlling the composition, size, and morphology of transition-metal carbides metals is important for product selectivity in industrial catalytic processes, such as Fischer–Tropsch synthesis (FTS). The formation iron–cobalt carbide nanocatalysts can enhance FTS process if iron to cobalt ratios are controlled. Unfortunately, this difficult achieve nanocrystals due ion migration, differences rates, requirement perfect critical nuclei form prior growth nanocrystal colloidal synthesis. In...
Metal–organic chalcogenolate assemblies have attracted recent interest as ensemble nanomaterials that contain one- or two-dimensional inorganic nanostructures in a periodic array with supramolecular isolation provided by an associated organic ligand lattice. Biphasic immiscible synthesis at liquid–liquid interfaces is convenient way to grow crystalline d10 metal–organic assemblies. However, there has been little systematic study of the role temperature on nucleation, growth, and stability...
Metal chalcogenide compounds have attracted interest as materials for next-generation semiconductors, catalysts, and device architectures. Hybrid containing both a metal architecture supporting organic lattice combine the interesting structural electronic properties of material class with configurable hybrid component that can lead to wide range tailorable materials. However, many methods available preparing inorganic coordination polymers in this require specialized solution-phase chemical...
Understanding how chemical modifications alter the atomic-scale organization of materials is fundamental importance in engineering and target considerable efforts computational prediction. Incorporating covalent non-covalent interactions designing crystals while "piggybacking" on driving force molecular self-assembly has augmented our to understand emergence complex structures using directed synthesis. Here, we prepared microcrystalline powders silver 2-, 3-, 4-fluorobenzenethiolates...
We report nucleophilic displacement reactions that can increase the dimensionality or coordination number of silver-based metal-organic chalcogenolates (MOChas). MOChas are crystalline ensembles containing one-dimensional (1D) two-dimensional (2D) inorganic topologies with structures and properties defined by choice metal, chalcogen, ligand. be readily prepared from a variety small-molecule ligands metals metal ions. Although offer ligand diversity, most reported examples use relatively...
Hybrid nanomaterials possess complex architectures that are driven by a self-assembly process between an inorganic element and organic ligand. The properties of these materials can often be tuned ligand variation, or swapping the element. This enables flexible fabrication tailored hybrid with rich variety for technological applications. Liquid-liquid interfaces useful synthesizing compounds as precursors segregated allowed to interact only at interface. Although procedurally straightforward,...
Abstract X‐ray free electron laser (XFEL) microcrystallography and synchrotron single‐crystal crystallography are used to evaluate the role of organic substituent position on optoelectronic properties metal–organic chalcogenolates (MOChas). MOChas crystalline 1D 2D semiconducting hybrid materials that have varying depending composition, topology, structure. While attracted much interest, small crystal sizes impede routine structure determination. A series constitutional isomers where aryl...
Organic electronic devices rely on the performance of polymers that are used as active layers. Poly(3,4-ethylenedioxythiophene) (PEDOT) is one most studied for organic and especially bioelectronics. Because charge carriers move along polymer backbone (anisotropic transport), key challenges controlling orientation in thin films, hence increasing transport performance. Here, we introduce a method oriented growth PEDOT chains nanometer-thick self-assembled monolayer (SAM)-modified gold...