Photoinduced electron transfer in covalent ruthenium–anthraquinone dyads: relative importance of driving-force, solvent polarity, and donor–bridge energy gap

2012 ◽  
Vol 14 (8) ◽  
pp. 2685 ◽  
Author(s):  
Jihane Hankache ◽  
Oliver S. Wenger
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Driving Force ◽  
Energy Gap ◽  
Solvent Polarity ◽  
Relative Importance

Efficient photoinduced electron transfer between C60/C70 and zinc octaethylporphyrin studied by nanosecond laser photolysis method

2000 ◽  
Vol 04 (06) ◽  
pp. 591-598 ◽  
Author(s):  
MOHAMED E. EL-KHOULY ◽  
MAMORU FUJITSUKA ◽  
OSAMU ITO
Keyword(s):  
Electron Transfer ◽  
Rate Constants ◽  
Photoinduced Electron Transfer ◽  
Transfer Rate ◽  
Transient Absorption ◽  
Laser Light ◽  
Solvent Polarity ◽  
Nanosecond Laser ◽  
Electron Transfer Rate ◽  
Absorption Bands

Photoinduced electron-transfer processes between C 60 or C 70 and zinc octaethylporphyrin ( ZnOEP ) have been studied in polar solvents with the nanosecond laser flash photolysis method, observing the transient absorption spectra in the visible and near-IR regions. By the predominant excitation of ZnOEP with 532 nm laser light the transient absorption bands of 3 ZnOEP * decayed, accompanied by the appearance of the transient absorption bands of [Formula: see text] and [Formula: see text]. By the predominant excitation of C 60 and C 70 with 610 nm laser light the decays of [Formula: see text] and [Formula: see text] were observed, accompanied by the appearance of [Formula: see text] and [Formula: see text]. The electron transfer rate constants (k et ) and the quantum yields (Φ et ) of [Formula: see text] and [Formula: see text] formation via 3 ZnOEP * and [Formula: see text] or [Formula: see text] have been evaluated. These values increase with the solvent polarity; in polar benzonitrile these values are higher than for other porphyrins such as zinc tetraphenylporphyrin. The back electron transfer rate constants were evaluated from the decays of [Formula: see text] and [Formula: see text], which also show a solvent polarity dependence.

Driving Force Dependence of Photoinduced Electron Transfer Dynamics of Intercalated Molecules in DNA

2003 ◽  
Vol 107 (45) ◽  
pp. 12511-12518 ◽  
Author(s):  
Shunichi Fukuzumi ◽  
Mari Nishimine ◽  
Kei Ohkubo ◽  
Nikolai V. Tkachenko ◽  
Helge Lemmetyinen
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Driving Force

Photoinduced electron transfer in wild type and mutated flavodoxin from Desulfovibrio vulgaris, strain Miyazaki F.: Energy gap law

2011 ◽  
Vol 219 (1) ◽  
pp. 32-41 ◽  
Author(s):  
Kiattisak Lugsanangarm ◽  
Somsak Pianwanit ◽  
Sirirat Kokpol ◽  
Fumio Tanaka ◽  
Haik Chosrowjan ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Energy Gap ◽  
Desulfovibrio Vulgaris ◽  
Wild Type ◽  
Energy Gap Law

scholarly journals Photoinduced 1,2,3,4-tetrahydropyridine ring conversions

2015 ◽  
Vol 11 ◽  
pp. 2166-2170
Author(s):  
Baiba Turovska ◽  
Henning Lund ◽  
Viesturs Lūsis ◽  
Anna Lielpētere ◽  
Edvards Liepiņš ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Solid State ◽  
Light Intensity ◽  
Photoinduced Electron Transfer ◽  
Driving Force ◽  
Spectroscopic Data

Stable heterocyclic hydroperoxide can be easily prepared as a product of fast oxidation of a 1,2,3,4-tetrahydropyridine by 3O2 if the solution is exposed to sunlight. The driving force for the photoinduced electron transfer is calculated from electrochemical and spectroscopic data. The outcome of the reaction depends on the light intensity and the concentration of O2. In the solid state the heterocyclic hydroperoxide is stable; in solution it is involved in further reactions.

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