Results 1 to 10 of about 14,125 (198)
Development of an Organic Emitter Exhibiting Reverse Intersystem Crossing Faster than Intersystem Crossing [PDF]
Angewandte Chemie - International EditionIn thermally activated delayed fluorescence (TADF)-based organic light-emitting diodes (OLEDs), acceleration of reverse intersystem crossing (RISC) and suppression of intersystem crossing (ISC) are demanded to shorten a lifetime of triplet excitons. As a
Ryosuke Okumura +2 more
exaly +5 more sources
Intersystem Crossing of 2-Methlypyrazine Studied by Femtosecond Photoelectron Imaging [PDF]
Molecules, 2022 2-methylpyrazine was excited to the high vibrational dynamics of the S1 state with 260 nm femtosecond laser light, and the evolution of the excited state was probed with 400 nm light. Because it was unstable, the S1 state decayed via intersystem crossing
Naipisai Wumaierjiang +6 more
doaj +3 more sources
Kinetic prediction of reverse intersystem crossing in organic donor–acceptor molecules
Nature Communications, 2020 Understanding and predicting the kinetics of reverse intersystem crossing (RISC) facilitates the design of materials. Here, the authors demonstrate a theoretical expression that reproduces experimental RISC rate constants ranging over five orders of ...
Naoya Aizawa +3 more
doaj +2 more sources
Nanomagnetic Control of Intersystem Crossing
The Journal of Physical Chemistry A, 2009 A theory is presented for how magnetic nanostructures can catalyze intersystem crossing in molecular radical pairs. Magnetic field gradients near physically realistic nanostructures are strong enough to induce a relative reorientation of two electronic ...
Cohen, Adam
core +5 more sources
Enhanced intersystem crossing in carbonylpyrenes
Phys. Chem. Chem. Phys., 2017 Photoexcited state relaxation of carbonylpyrenes displays ultrafast intersystem crossing to generate near-unity triplet formation.
Shinaj K. Rajagopal +5 more
core +3 more sources
Intersystem crossing in thiobases proceeds by a dark intermediate state [PDF]
EPJ Web of Conferences, 2019 4-thiouracil (4TU) is studied by transient absorption spectroscopy employing sub-20 fs UV-pulses and hybrid QM(CASPT2) / MM(AMBER) computations (static and dynamic), evidencing that, along the photoexcited relaxation pathway, intersystem crossing ...
Teles-Ferreira Danielle Cristina +10 more
doaj +3 more sources
Intersystem crossing in the helicenes
Chemical Physics Letters, 1975 The rate constants of radiationless S 1 → T n and T 1 → S 0 intersystem crossing of six helicenes have been evaluated by combining emission lifetimes and quantum yields of fluorescence and triplet state formation. The data are compared to those of linear
Sapir, Michael +3 more
core +3 more sources
Mechanism of Ultrafast Intersystem Crossing in 2‐Nitronaphthalene [PDF]
Chemistry - 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
exaly +5 more sources
Enhanced intersystem crossing in core-twisted aromatics
Chemical Science, 2017 We describe the design, bottom-up synthesis and X-ray single crystal structure of systematically twisted aromatics 1c and 2d for efficient intersystem crossing.
Nagarajan, Kalaivanan +3 more
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Ultrafast Intersystem Crossing of 4-Thiothymidine in Aqueous Solution
Journal of Physical Chemistry Letters, 2010 Ultrafast intersystem crossing of UVA-sensitive 4-thiothymidine in aqueous solution was investigated by pump?probe transient absorption. 4-Thiothymidine in the excited singlet state exhibited a distinctively different photophysical pathway from that of ...
Tadashi Suzuki +2 more
exaly +2 more sources