Results 31 to 40 of about 299,211 (194)
Three-State-Involving Vibronic Resonance Is a Key to Enhancing Reverse Intersystem Crossing Dynamics of Organoboron-Based Ultrapure Blue Emitters [PDF]
, 2020 In organoboron OLED emitter DABNA, vibronic resonance strongly enhances reverse intersystem crossing rate even with a sizable T1-S1 energy gap. The resonance is peculiar in that the vibrational frequency has to match both (1) the T1-S1 energy gap and (2)
Dae Sin, Kim +8 more
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Intersystem Crossing in Diplatinum Complexes
The Journal of Physical Chemistry A, 2016 Intersystem crossing (ISC) in solid [(C4H9)4N]4[Pt2(μ-P2O5(BF2)2)4], abbreviated Pt(pop-BF2), is remarkably slow for a third-row transition metal complex, ranging from τISC ≈ 0.9 ns at 310 K to τISC ≈ 29 ns below 100 K. A classical model based on Boltzmann population of one temperature-independent and two thermally activated pathways was previously ...
Lam, Yan Choi +2 more
openaire +3 more sources
Absence of intersystem crossing in 1,4-didehydrobenzene [PDF]
, 1994 The rate of singlet-to-triplet intersystem crossing in 1,4-didehydrobenzene (the biradical produced as a reactive intermediate in the thermal cycloaromatization of enediynes), cannot be increased by the application of an external magnetic field. The rate
Grissom, Charles B. +2 more
core +1 more source
Intersystem crossing in the exit channel
Nature Chemistry, 2018 Intersystem crossing plays an important role in photochemistry. It is understood to be efficient when heavy atoms are present due to strong spin-orbit coupling, or when strongly bound long-lived complexes are formed that increase the chance of finding the singlet-triplet intersection seam.
Hongwei Li +3 more
openaire +3 more sources
Iraqi Journal of Physics, 2021 The effect of molecules intersystem crossing (Kisc) on characteristics (energy and duration) of a Passive Q- switched Laser Pulse has been studied by mathematical description (rate equations model) for temporal performance of which was used as a ...
Abdul-Kareem Mahdi Salih
doaj
Intersystem Crossing as Vibronically-Induced Phonon Emission and Absorption Processes: A Unified View of Nonradiative Transitions in a Molecule [PDF]
, 2023 An analytical expression for the nonradiative rate constant is derived based on Fermi\u27s golden rule within the mixed-spin crude adiabatic (CA) approximation.
Tohru, Sato +3 more
core +2 more sources
Structural Dynamics, 2017 The competition between ultrafast intersystem crossing and internal conversion in benzene, toluene, and p-xylene is investigated with time-resolved photoelectron spectroscopy and quantum chemical calculations.
Anne B. Stephansen, Theis I. Sølling
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Nature Communications, 2022 Here, the authors investigate naphthalimide-based compounds with cold triplet excitons utilized by triplet-triplet annihilation-mediated high-lying reverse intersystem crossing, and realize rate constant of over 109 s−1 with exciton utilization ...
Yanju Luo +14 more
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Ultraviolet irradiation-responsive dynamic ultralong organic phosphorescence in polymeric systems
Nature Communications, 2021 Efficient stimulus-responsive phosphorescence organic materials are attractive, but are extremely rare because of unclear design principles and intrinsically spin-forbidden intersystem crossing.
Yongfeng Zhang +8 more
doaj +1 more source
Accurate Spin-Orbit Coupling and Intersystem Crossing by Relativistic Mixed-Reference Spin-Flip (MRSF)-TDDFT [PDF]
, 2022 Relativistic MRSF-TDDFT is developed considering the spin-orbit coupling (SOC) within the mean-field approximation. The resulting SOC-MRSF faithfully reproduces the experiments with very high accuracy, which is also consistent with the values by four ...
Cheol-Ho, Choi +4 more
core +2 more sources