Exciton-photon coupling in organic materials with large intersystem crossing rates and strong excited state molecular relaxation

2005 ◽  
Author(s):  
R.J. Holmes ◽  
S.R. Forrest
Keyword(s):  
Excited State ◽  
Organic Materials ◽  
Intersystem Crossing ◽  
Molecular Relaxation ◽  
Photon Coupling

Spin-Forbidden Excitation Enables Infrared Photoredox Catalysis

2020 ◽  
Author(s):  
Tomislav Rovis ◽  
Benjamin D. Ravetz ◽  
Nicholas E. S. Tay ◽  
Candice Joe ◽  
Melda Sezen-Edmonds ◽  
...  
Keyword(s):  
Excited State ◽  
Ground State ◽  
Intersystem Crossing ◽  
Photoredox Catalysis ◽  
Infrared Irradiation ◽  
Triplet Excitation ◽  
New Family ◽  
Ir Light

We describe a new family of catalysts that undergo direct ground state singlet to excited state triplet excitation with IR light, leading to photoredox catalysis without the energy waste associated with intersystem crossing. The finding allows a mole scale reaction in batch using infrared irradiation.

INTERSYSTEM CROSSING OF THE ELECTRONICALLY EXCITED DIDEUTEROETHYLENE MOLECULES FORMED IN BENZENE PHOTOSENSITIZATION

1966 ◽  
Vol 44 (18) ◽  
pp. 2173-2180 ◽  
Author(s):  
Terumi Terao ◽  
Shun-Ichi Hirokami ◽  
Shin Sato ◽  
R. J. Cvetanović
Keyword(s):  
Excited State ◽  
Experimental Evidence ◽  
Rate Constants ◽  
Intersystem Crossing ◽  
Molecular Decomposition ◽  
Electronically Excited

Experimental evidence is presented for a rapidly occurring intersystem crossing of the electronically excited dideuteroethylene molecules initially formed in the benzene-photosensitized reaction at 2 537 Å and 25 °C to another excited state which is responsible for the internal H-atom scrambling. The mechanism is entirely analogous to that previously postulated for the photoexcited states sensitized by Hg(3P1) atoms but the rate constants for intersystem crossing and molecular decomposition are drastically decreased as a result of the smaller amount of energy available for the excitation.

scholarly journals Excited state dynamics of protonated keto uracil: intersystem crossing pathways in competition

2021 ◽  
Vol 75 (1) ◽  
Author(s):  
Jordan Dezalay ◽  
Michel Broquier ◽  
Satchin Soorkia ◽  
Gilles Grégoire
Keyword(s):  
Excited State ◽  
Intersystem Crossing ◽  
Excited State Dynamics

Excited state absorption spectra and intersystem crossing kinetics in the naphthaldehydes

1984 ◽  
Vol 80 (7) ◽  
pp. 3179-3184 ◽  
Author(s):  
David W. Boldridge ◽  
Brian L. Justus ◽  
Gary W. Scott
Keyword(s):  
Excited State ◽  
Absorption Spectra ◽  
Excited State Absorption ◽  
Intersystem Crossing

An efficient implementation of spin-orbit coupling within the framework of semiempirical orthogonalization-corrected method for ultrafast intersystem crossing dynamics

2021 ◽  
Author(s):  
Jie Liu ◽  
Zhenggang Lan ◽  
Jinlong Yang
Keyword(s):  
Excited State ◽  
Configuration Interaction ◽  
Efficient Implementation ◽  
Orbit Coupling ◽  
Intersystem Crossing ◽  
Spin Orbit Coupling ◽  
Spin Orbit

We implement spin-orbit couplings (SOC) within the framework of semiempirical orthogonalization-corrected methods (OMx). The excited-state wavefunction is generated from configuration interaction with single excitations (CIS). The SOC Hamiltonian in terms...

scholarly journals Excited state engineering for efficient reverse intersystem crossing

2018 ◽  
Vol 4 (6) ◽  
pp. eaao6910 ◽  
Author(s):  
Hiroki Noda ◽  
Hajime Nakanotani ◽  
Chihaya Adachi
Keyword(s):  
Excited State ◽  
Intersystem Crossing

scholarly journals Visualizing excited state dynamics of conjugated molecules trough femtosecond stimulated Raman scattering

2019 ◽  
Vol 205 ◽  
pp. 09015
Author(s):  
Batignani Giovanni ◽  
Pontecorvo Emanuele ◽  
Ferrante Carino ◽  
Aschi Massimiliano ◽  
Elles Christopher G. ◽  
...  
Keyword(s):  
Excited State ◽  
Raman Scattering ◽  
Model Compound ◽  
Stimulated Raman Scattering ◽  
Reaction Pathway ◽  
Structural Rearrangement ◽  
Intersystem Crossing ◽  
Conjugated Molecules ◽  
Excited State Dynamics ◽  
Stimulated Raman

The reaction pathway in the photoexcited model compound 2-methyl-5-phenylthiophene has been unravelled by Femtosecond Stimulated Raman Scattering and quantum chemical calculations. The excited state dynamics, including structural rearrangement, vibrational cooling and intersystem-crossing, will be presented.

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