Intersystem crossing observed by ultrasonic relaxation of the singlet-quintet spin equilibrium of iron(II) complexes in solution

1978 ◽  
Vol 100 (10) ◽  
pp. 3044-3050 ◽  
Author(s):  
James K. Beattie ◽  
Robert A. Binstead ◽  
Robert J. West
Keyword(s):  
Intersystem Crossing ◽  
Ultrasonic Relaxation

Intersystem crossing observed by ultrasonic relaxation of the 2T .dblharw. 6A spin equilibrium of hexadentate iron(III) complexes in solution

1978 ◽  
Vol 100 (18) ◽  
pp. 5609-5614 ◽  
Author(s):  
Robert A. Binstead ◽  
James K. Beattie ◽  
Eric V. Dose ◽  
Michael F. Tweedle ◽  
Lon J. Wilson
Keyword(s):  
Intersystem Crossing ◽  
Ultrasonic Relaxation

ULTRASONIC RELAXATION IN α-SULFUR

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-611-C6-613
Author(s):  
M. Boissier ◽  
R. Vacher ◽  
B. Perrin
Keyword(s):  
Ultrasonic Relaxation

LOW TEMPERATURE ULTRASONIC RELAXATION IN A DILUTE Ta-H ALLOY

1985 ◽  
Vol 46 (C10) ◽  
pp. C10-87-C10-90 ◽  
Author(s):  
K. R. MASCHHOFF ◽  
A. V. GRANATO
Keyword(s):  
Low Temperature ◽  
Ultrasonic Relaxation

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.

scholarly journals Intersystem crossing processes in the 2CzPN emitter: a DFT/MRCI study including vibrational spin–orbit interactions

2021 ◽  
Vol 23 (5) ◽  
pp. 3668-3678
Author(s):  
Angela Rodriguez-Serrano ◽  
Fabian Dinkelbach ◽  
Christel M. Marian
Keyword(s):  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Intersystem Crossing ◽  
Spin Orbit ◽  
Spin Orbit Interactions

Multireference quantum chemical calculations were performed in order to investigate the (reverse) intersystem crossing ((R)ISC) mechanisms of 4,5-di(9H-carbazol-9-yl)-phthalonitrile (2CzPN).

Electron transfer sensitized photolysis of 'onium salts

1988 ◽  
Vol 66 (2) ◽  
pp. 319-324 ◽  
Author(s):  
R. J. DeVoe ◽  
M. R. V. Sahyun ◽  
Einhard Schmidt ◽  
N. Serpone ◽  
D. K. Sharma
Keyword(s):  
Electron Transfer ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Quantitative Model ◽  
Intersystem Crossing ◽  
Single Electron Transfer ◽  
Onium Salts ◽  
Encounter Complex ◽  
Back Electron Transfer

We have studied the anthracene-sensitized photolyses of both diphenyliodonium and triphenylsulphonium salts in solution using both steady-state and laser flash photolysis techniques. Photoproducts, namely, phenylated anthracenes along with iodobenzene or diphenylsulphide, respectively, are obtained from both salts with quantum efficiencies of ca. 0.1 at 375 nm. We infer the intermediacy of diphenyliodo and triphenylsulphur radicals formed by single electron transfer from the singlet-excited anthracene. We have developed a quantitative model of this chemistry, and identify the principal sources of inefficiency as back electron transfer, which occurs at nearly the theoretically limiting rate, intersystem crossing from the initially formed sensitizer–'onium salt encounter complex, and in-cage radical recombination.

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