A5003915147- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- Ferroelectric and Piezoelectric Materials
- Organic Electronics and Photovoltaics
- Spectroscopy and Quantum Chemical Studies
- Magnetic and transport properties of perovskites and related materials
- Perovskite Materials and Applications
- Nanocluster Synthesis and Applications
- Light effects on plants
- Advanced Nanomaterials in Catalysis
- CO2 Reduction Techniques and Catalysts
- Conducting polymers and applications
- Porphyrin and Phthalocyanine Chemistry
- Advanced Battery Materials and Technologies
- Liquid Crystal Research Advancements
- Catalytic Processes in Materials Science
- Shape Memory Alloy Transformations
- Photosynthetic Processes and Mechanisms
- Advanced Thermoelectric Materials and Devices
- Phase-change materials and chalcogenides
- Gold and Silver Nanoparticles Synthesis and Applications
- Material Dynamics and Properties
- Thermal Expansion and Ionic Conductivity
- Magnesium Oxide Properties and Applications
Harvard University
2020-2024
Harvard University Press
2021
University of Chicago
2014-2017
Chicago Institute for Psychoanalysis
2014-2017
Molten phases of metal–organic networks offer exciting opportunities for using coordination chemistry principles to access liquids and glasses with unique tunable structures properties. Here, we discuss general thermodynamic strategies provide an increased enthalpic entropic driving force reversible, low-temperature melting transitions in extended solids illustrate this approach through a systematic study series bis(acetamide)-based record-low temperatures. The low temperatures these...
Pressure-induced thermal changes in solids-barocaloric effects-can be used to drive cooling cycles that offer a promising alternative traditional vapor-compression technologies. Efficient barocaloric requires materials undergo reversible phase transitions with large entropy changes, high sensitivity hydrostatic pressure, and minimal hysteresis, the combination of which has been challenging achieve existing materials. Here, we report new mechanism for achieving colossal effects leverages...
Atomically precise metal nanoclusters (NCs) are an intriguing class of crystalline solids with unique physicochemical properties derived from tunable structures and compositions. Most atomically NCs require closed-shells coordinatively saturated surface metals in order to be stable. Herein, we report Au43(C≡CtBu)20 Au42Ag1(C≡CtBu)20, which feature open electronic geometric shells, leading both paramagnetism (23 valence e-) enhanced catalytic activity a single unsaturated metal. The...
The development of materials that reversibly store high densities thermal energy is critical to the more efficient and sustainable utilization energy. Herein, we investigate metal-organic compounds as a new class solid-liquid phase-change (PCMs) for storage. Specifically, show isostructural series divalent metal amide complexes featuring extended hydrogen bond networks can undergo tunable, high-enthalpy melting transitions over wide temperature range. Moreover, these coordination provide...
Barocaloric effects─solid-state thermal changes induced by the application and removal of hydrostatic pressure─offer potential for energy-efficient heating cooling without relying on volatile refrigerants. Here, we report that dialkylammonium halides─organic salts featuring bilayers alkyl chains templated through hydrogen bonds to halide anions─display large, reversible, tunable barocaloric effects near ambient temperature. The conformational flexibility soft nature weakly confined...
Owing to their high tunability and predictable structures, metal-organic materials offer a powerful platform study glass formation crystallization processes design glasses with unique properties. Here, we report novel series of glass-forming metal-ethylenebis(acetamide) networks that undergo reversible transitions below 200 °C. The glass-transition temperatures, kinetics, stability these are readily tunable, either by synthetic modification or liquid-phase blending, form binary glasses. Pair...
We report that exposing the dipyrrin complex (EMindL)Cu(N2) to air affords rapid, quantitative uptake of O2 in either solution or solid-state yield (EMindL)Cu(O2). The and thermal stability (EMindL)Cu(O2) is unparalleled molecular copper-dioxygen coordination chemistry, attributable ligand flanking groups which preclude [Cu(O2)]1+ core from degradation. Despite apparent (EMindL)Cu(O2), dioxygen binding reversible over multiple cycles with competitive solvent exchange, cycling, redox...
Atomically precise nanoclusters (NCs) provide useful model systems for studying fundamental aspects of the metal-catalysed CO 2 reduction reaction (CO RR).
We present the synthesis and characterization of a benzodithiophene/thiophene alternating copolymer decorated with rigid, singly branched pendant side chains. characterize exciton migration recombination dynamics in these molecules tetrahydrofuran solution, using combination static time-resolved spectroscopies. As control experiments, we also measure electronic relaxation isolated molecular analogues both chain polymer moieties. employ semi-empirical time-dependent density functional theory...
Recent experimental studies revealed that charge carriers harvested by bulk heterojunction organic photovoltaics can be collected on ultrafast time scales. To investigate exciton mobility, we construct simple, nonatomistic models of a common polymeric electron donor material. We first explore the relationship between magnitude energetic noise in model Hamiltonian and spatial extent resulting eigenstates. then employ quantum master equation approach to simulate migration chromophore-localized...