A5022091771- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Boron Compounds in Chemistry
- Organoboron and organosilicon chemistry
- Radiopharmaceutical Chemistry and Applications
- Conducting polymers and applications
- Molecular Junctions and Nanostructures
- Organic Electronics and Photovoltaics
- Dental Implant Techniques and Outcomes
- Inorganic Chemistry and Materials
- Nanocluster Synthesis and Applications
- Luminescence and Fluorescent Materials
- Chalcogenide Semiconductor Thin Films
- Click Chemistry and Applications
- Advanced Sensor and Energy Harvesting Materials
- Radioactive element chemistry and processing
- Quantum Dots Synthesis And Properties
- Nanowire Synthesis and Applications
- Quantum chaos and dynamical systems
- Fluid Dynamics and Turbulent Flows
- Boron and Carbon Nanomaterials Research
- Semiconductor materials and devices
- Machine Learning in Materials Science
- Advanced Battery Materials and Technologies
- Perovskite Materials and Applications
University of Toronto
2023-2024
University of California, Los Angeles
2018-2022
University of California System
2019
Los Angeles City College
2019
California NanoSystems Institute
2018
Abstract Addition of aqueous hydrohalic acids during the synthesis colloidal quantum dots (QDs) is widely employed to achieve high‐quality QDs. However, this reliance on use solutions incompatible with oxygen‐ and water‐sensitive precursors such as those used in Te‐alloyed ZnSe Herein, it shown that incompatibility leads phase segregation into Te‐rich Te‐poor regions, causing spectral broadening luminescence peak shifting under high laser irradiation applied electrical bias. Here, a...
We report the first indirect observation and use of boron vertex-centered carboranyl radicals generated by oxidation modified precursors. These radical intermediates are formed direct a B–B bond between cluster cage an exopolyhedral boron-based substituent (e.g., −BF3K, −B(OH)2). The in situ species shown to be competent substrates reactions with oxygen-based radicals, dichalcogenides, N-heterocycles, yielding corresponding substituted carboranes containing B–O, B–S, B–Se, B–Te, B–C bonds....
Self-assembled monolayers (SAMs) of carborane isomers with different dipole moments passivate germanium to modulate surface work function while maintaining chemical environment and energy. To identify head groups capable monolayer formation on surfaces, we studied thiol-, hydroxyl-, carboxyl-terminated carboranes. These films were successfully formed carboxylic acid instead the archetypal thiol, suggesting that cluster significantly affects headgroup reactivity. Film characterization...
Herein, we report the use of sterically invariant carborane-based chalcogenols, containing exopolyhedral B–Se or B–S bonds, as ligands for formation photoluminescent copper(I)-based metal–organic chalcogenolate assemblies (MOCHAs). We show that precise tuning carborane dipole by changing isomer from meta to ortho allows control over MOCHA morphology and regulation resulting photophysical properties. Furthermore, microcrystal electron diffraction (MicroED) has been demonstrated a powerful...
Carborane RAFT agents are introduced as tunable multi-purpose tools acting <sup>1</sup>H NMR spectroscopic handles, Raman probes, and recognition units.
Precision oligothiophenes were synthesized from terthiophene in an efficient manner. Interestingly, the unreacted was readily recovered and reused subsequent synthesis.
Conjugated macromolecules have a rich history in chemistry, owing to their chemical arrangements that intertwine physical and electronic properties. The continuing study application of these systems, however, necessitates the development atomically precise models bridge gap between molecules, polymers, and/or blends. One class conjugated polymers facilitated advancement structure-property relationships is discrete, precision oligomers remained an outstanding synthetic challenge with only...
Organic electrode materials have emerged as promising solutions for numerous energy applications. However, their full utility is impeded by limited stability and inherently poor conductivity. To address these issues, one approach to use functional conjugated polymers replace the conventional insulating poly(vinylidene fluoride) (PVDF) binder that may facilitate ion/electron transport stabilize electrode. In this study, we report synthesis of a series sulfonamide π-conjugated small molecules,...
Abstract Poly(3‐hexylthiophene) (P3HT) is a well‐studied conjugated polymer; however, the end‐group functionalization of these polymers limited by fundamental synthetic challenges. Generally, end‐capping agents are used to terminate Kumada catalyst transfer polycondensation (KCTP) install functional end‐groups at propagating chain end. In this work, it shown that P3HT can be prepared with novel S N Ar‐active external initiator, followed end capping afford heterobifunctional exhibit...
Chalcogen-containing carboranes have been known for several decades and possess stable exopolyhedral B(9)-Se B(9)-Te σ bonds despite the electron-donating ability of B(9) vertex. While these molecules are known, little has done to thoroughly evaluate their electrophilic nucleophilic behavior. Herein, we report an assessment reactivity m-carboranylselenyl(II), -tellurenyl(II), -tellurenyl(IV) chlorides establish pattern with Grignard reagents, alkenes, alkynes, enolates, electron-rich arenes....
We report the first indirect observation and use of boron vertex-centered carboranyl radicals generated by oxidation modified precursors. These radical intermediates are formed direct a B−B bond between cluster cage an exopolyhedral boron-based substituent (e.g., −BF3K, −B(OH)2). The in situ species shown to be competent substrates reactions with oxygen-based radicals, dichalcogenides, N-heterocycles, yielding corresponding substituted carboranes containing B−O, B−S, B−Se, B−Te, B−C bonds....
We report improved methods utilizing orthogonal chemistry to achieve efficient substitution at electron-rich B-vertices and electron-poor C-vertices of carborane. Functionalization with alkyl (hetero)aryl groups using corresponding Grignard reagents has been by the use a Pd-based precatalyst featuring an biaryl phosphine ligand. Using developed catalytic conditions lead cross-coupling transformations achieved within several hours. Importantly, this method is applicable towards alkyl-based...
<div><div><div><p>We report the first indirect observation and use of boron vertex-centered carboranyl radicals generated by oxidation modified precursors. These radical intermediates are formed direct a B−B bond between cluster cage an exopolyhedral boron-based substituent (e.g., −BF3K, −B(OH)2). The in situ species shown to be competent substrates reactions with oxygen-based radicals, dichalcogenides, N-heterocycles, yielding corresponding substituted carboranes...
<table><tr><td><p>We report improved methods utilizing orthogonal chemistry to achieve efficient substitution at electron-rich B-vertices and electron-poor C-vertices of carborane. Functionalization with alkyl (hetero)aryl groups using corresponding Grignard reagents has been by the use a Pd-based precatalyst featuring an biaryl phosphine ligand. Using developed catalytic conditions lead cross-coupling transformations achieved within several hours. Importantly, this...