Electron-transfer and energy-transfer quenching of excited-state chromium(III) cyclam complexes and redox reactions of the chromium(II) product

1993 ◽  
Vol 97 (47) ◽  
pp. 12249-12253 ◽  
Author(s):  
Andreja Bakac ◽  
James H. Espenson
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Excited State ◽  
Redox Reactions ◽  
Cyclam Complexes

scholarly journals Electron Transfer Initiated Reactions Photoinduced by Pterins

Pteridines ◽  
2011 ◽  
Vol 22 (1) ◽  
pp. 111-119 ◽  
Author(s):  
Carolina Lorente ◽  
Gabriela Petroselli ◽  
M. Laura Dántola ◽  
Esther Oliveros ◽  
Andrés H. Thomas
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Redox Reactions ◽  
Type I ◽  
Biological Processes ◽  
Type Ii ◽  
Triplet Excited State ◽  
Oxygen Production ◽  
Production Type ◽  
Transfer Mechanisms

Abstract Interest in the photochemistry and photophysics of pterins has increased since the participation of this family of compounds in different photobiological processes has been suggested or demonstrated in recent decades. Pterins participate in relevant biological processes, such as metabolic redox reactions, and can photoinduce the oxidation of biomolecules through both electron transfer mechanisms (Type I) and singlet oxygen production (Type II). This article describes recent findings on electron transfer-initiated reactions photoinduced by the triplet excited state of pterins and connects them in the context of photosensitized processes of biological relevance.

scholarly journals Sensitization of ultra-long-range excited-state electron transfer by energy transfer in a polymerized film

2012 ◽  
Vol 109 (38) ◽  
pp. 15132-15135 ◽  
Author(s):  
Akitaka Ito ◽  
David J. Stewart ◽  
Zhen Fang ◽  
M. Kyle Brennaman ◽  
Thomas J. Meyer
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Excited State ◽  
Charge Transfer ◽  
Long Range ◽  
Methyl Viologen ◽  
Polymer Network ◽  
Triplet Energy ◽  
Ligand Charge Transfer ◽  
Triplet Energy Transfer

Distance-dependent energy transfer occurs from the Metal-to-Ligand Charge Transfer (MLCT) excited state to an anthracene-acrylate derivative (Acr-An) incorporated into the polymer network of a semirigid poly(ethyleneglycol)dimethacrylate monolith. Following excitation, to Acr-An triplet energy transfer occurs followed by long-range, Acr-3An—Acr-An → Acr-An—Acr-3An, energy migration. With methyl viologen dication (MV2+) added as a trap, Acr-3An + MV2+ → Acr-An+ + MV+ electron transfer results in sensitized electron transfer quenching over a distance of approximately 90 Å.

Competitive Marcus-Type Electron Transfer and Energy Transfer from the Higher Triplet Excited State

2004 ◽  
Vol 108 (50) ◽  
pp. 10941-10948 ◽  
Author(s):  
Masanori Sakamoto ◽  
Xichen Cai ◽  
Michihiro Hara ◽  
Sachiko Tojo ◽  
Mamoru Fujitsuka ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Excited State ◽  
Triplet Excited State

scholarly journals Tuning Excited-State Electron Transfer from an Adiabatic to Nonadiabatic Type in Donor−Bridge−Acceptor Systems and the Associated Energy-Transfer Process

2006 ◽  
Vol 110 (44) ◽  
pp. 12136-12144 ◽  
Author(s):  
Kew-Yu Chen ◽  
Cheng-Chih Hsieh ◽  
Yi-Ming Cheng ◽  
Chin-Hung Lai ◽  
Pi-Tai Chou ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Excited State ◽  
Transfer Process ◽  
Energy Transfer Process ◽  
State Electron

scholarly journals Orthogonally Aligned Cyclic BODIPY Arrays with Long-lived Triplet Excited States as Efficient Heavy-Atom-Free Photosensitizers

2021 ◽  
Author(s):  
Zhaoyang Zhu ◽  
Xue Zhang ◽  
Xing Guo ◽  
Qing-Hua Wu ◽  
Zhongxin Li ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Excited State ◽  
Excited States ◽  
Heavy Atom ◽  
Triplet Excited State ◽  
Transfer Processes ◽  
Excited State Lifetimes ◽  
Triplet Excited States

Photosensitizers with long triplet excited state lifetimes are key to their efficient electron transfer or energy transfer processes. Herein, we report a novel class of cyclic trimeric BODIPY arrays which...

Energy transfer vs. electron transfer in the excited-state quenching of tris(2,2'-bipyridine-N,N')ruthenium(II) complexes by cobalt(III) cage complexes: applications to the photoreduction of water

1985 ◽  
Vol 24 (17) ◽  
pp. 2671-2680 ◽  
Author(s):  
Inge I. Creaser ◽  
Lawrence R. Gahan ◽  
Rodney J. Geue ◽  
Anton Launikonis ◽  
Peter A. Lay ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Excited State ◽  
Excited State Quenching
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