Results 21 to 30 of about 28,761 (191)

Numerical analysis of molecules intersystem crossing effect on a passively Q- switched laser pulse characteristics

open access: yesIraqi 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  

The role of magnetic fields on the transport and efficiency of aluminum tris(8-hydroxyquinoline) based organic light emitting diodes [PDF]

open access: yes, 2007
Copyright 2007 AIP Publishing LLC. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
Desai, P   +3 more
core   +1 more source

Distortion dependent intersystem crossing: A femtosecond time-resolved photoelectron spectroscopy study of benzene, toluene, and p-xylene

open access: yesStructural 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
doaj   +1 more source

Routes for efficiency enhancement in fluorescent TADF exciplex host OLEDs gained from an electro‐optical device model [PDF]

open access: yes, 2019
Fluorescence-based organic light-emitting diodes (OLEDs) using thermally activated delayed fluorescence (TADF) have increasingly attracted attention in research and industry.
Kim, Jang‐Joo   +5 more
core   +1 more source

Ultra-fast triplet-triplet-annihilation-mediated high-lying reverse intersystem crossing triggered by participation of nπ*-featured excited states

open access: yesNature 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
doaj   +1 more source

Ultraviolet irradiation-responsive dynamic ultralong organic phosphorescence in polymeric systems

open access: yesNature 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

Ultrafast Intersystem Crossing in Xanthone from Wavepacket Dynamics [PDF]

open access: yesJournal of the American Chemical Society, 2021
Most aromatic ketones containing first-row elements undergo unexpectedly fast intersystem crossing in few tens of picoseconds and a quantum yield close to unity. Among them, xanthone (9H-xanthen-9-one) possesses one of the fastest singlet-triplet rates of ~1.5 ps. The exact mechanism of this unusually fast transition is still under debate.
Alías-Rodríguez, Marc   +2 more
openaire   +3 more sources

Kinetic prediction of reverse intersystem crossing in organic donor–acceptor molecules

open access: yesNature 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   +1 more source

Magnetoresistance in organic light-emitting diode structures under illumination [PDF]

open access: yes, 2007
Copyright 2007 by the American Physical Society. Article is available at
Desai, P   +3 more
core   +1 more source

Unveiling the concentration dependent direct triplet formation via singlet fission in a tetracene derivative [PDF]

open access: yesEPJ Web of Conferences, 2019
Singlet fission is slowed down on diffusional timescales in highly concentrated solutions compared to thin films for a tetracene-like molecule. The underlying mechanism suggests competing intersystem crossing and singlet fission, where in the latter ...
Wollscheid Nikolaus   +6 more
doaj   +1 more source

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