Results 61 to 70 of about 28,761 (191)

Time-resolved gas-phase kinetic and quantum chemical studies of the reaction of silylene with oxygen [PDF]

open access: yes, 2005
Time-resolved kinetic studies of the reaction of silylene, SiH2, generated by laser flash photolysis of phenylsilane, have been carried out to obtain rate constants for its bimolecular reaction with O-2. The reaction was studied in the gas phase over the
Adamovic, I.   +7 more
core   +1 more source

Tetrathienothiophene Porphyrin as a Metal-Free Sensitizer for Room-Temperature Triplet–Triplet Annihilation Upconversion

open access: yesFrontiers in Chemistry, 2022
Optically excited triplet states of organic molecules serve as an energy pool for the subsequent processes, either photon energy downhill, such as room temperature phosphorescence, or photon energy uphill process—the triplet–triplet annihilation ...
Aleksey Vasilev   +6 more
doaj   +1 more source

Magnetocatalytic Adiabatic Spin Torque Orbital Transformations for Novel Chemical and Catalytic Reaction Dynamics: The Little Effect [PDF]

open access: yes, 2006
In this manuscript the theory and phenomena associated with the Little Effect are introduced as the spin induced orbital dynamics of confined fermions under strong magnetic and thermal environments.
Little, Reginald B.
core  

Inverting Singlet and Triplet Excited States using Strong Light-Matter Coupling

open access: yes, 2019
In organic microcavities, hybrid light-matter states can form with energies that differ from the bare molecular excitation energies by nearly 1 eV. A timely question, given recent advances in the development of thermally activated delayed fluorescence ...
Eizner, Elad   +3 more
core   +1 more source

Mechanism of Ultrafast Intersystem Crossing in 2‐Nitronaphthalene [PDF]

open access: yesChemistry – A European Journal, 2018
AbstractNitronaphthalene derivatives efficiently populate their electronically excited triplet states upon photoexcitation through ultrafast intersystem crossing (ISC). Despite having been studied extensively by time‐resolved spectroscopy, the reasons behind their ultrafast ISC remain unknown.
J. Patrick Zobel   +2 more
openaire   +4 more sources

Spin Photochemistry: Electron Spin Multiplicity as a Tool for Reactivity and Selectivity Control

open access: yesCHIMIA, 2021
Spin chemistry involving small organic molecules without heavy atoms is highly sensitive to spin-orbit-coupling (SOC) modulating biradical conformation as well as hyperfine coupling (HFC) modulating magnetic isotope interactions. Several easily available
Axel G. Griesbeck, Seyma Bozkus
doaj   +1 more source

intersystem crossing

open access: yes, 2014
Citation: 'intersystem crossing' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.I03123 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Intersystem Crossings Drive Atmospheric Gas-Phase Dimer Formation [PDF]

open access: yesThe Journal of Physical Chemistry A, 2019
High molecular weight "ROOR'" dimers, likely formed in the gas phase through self- and cross-reactions of complex peroxy radicals (RO2), have been suggested to play a key role in forming ultrafine aerosol particles in the atmosphere. However, the molecular-level reaction mechanism producing these dimers remains unknown.
Rashid R. Valiev   +4 more
openaire   +4 more sources

Understanding H-aggregates crystallization induced emissive behavior: insights from theory

open access: yesScientific Reports, 2023
We conducted a theoretical investigation into how the molecular stacking effect impacts the photophysical properties in solid phases. Our findings indicated that in the aggregated state, the out-of-plane distorted vibration and imidazole ring stretching ...
Huixue Li   +4 more
doaj   +1 more source

Exciton-polaron complexes in pulsed electrically-detected magnetic resonance

open access: yes, 2015
Several microscopic pathways have been proposed to explain the large magnetic effects observed in organic semiconductors, but identifying and characterising which microscopic process actually influences the overall magnetic field response is challenging.
Baker, W. J.   +2 more
core   +1 more source

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