Electron transfer from the benzophenone triplet excited state directs the photochemical synthesis of gold nanoparticles

2014 ◽  
Vol 13 (2) ◽  
pp. 149-153 ◽  
Author(s):  
Christopher D. McTiernan ◽  
Emilio Isaac Alarcon ◽  
Geniece L. Hallett-Tapley ◽  
Juliana Murillo-Lopez ◽  
Ramiro Arratia-Perez ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electron Transfer ◽  
Excited State ◽  
Photochemical Synthesis ◽  
Triplet Excited State

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.

Exclusive triplet electron transfer leading to long-lived radical ion-pair formation in an electron rich platinum porphyrin covalently linked to fullerene dyad

2020 ◽  
Vol 56 (45) ◽  
pp. 6058-6061 ◽  
Author(s):  
Dili R. Subedi ◽  
Habtom B. Gobeze ◽  
Yuri E. Kandrashkin ◽  
Prashanth K. Poddutoori ◽  
Art van der Est ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Ion Pair ◽  
Pair Formation ◽  
Triplet Excited State ◽  
Ion Pair Formation ◽  
Donor Acceptor ◽  
Platinum Porphyrin ◽  
Covalently Linked ◽  
Pair Energy

Radical ion-pair energy as high as 1.48 eV with lifetime as much as ∼1 μs, exclusively from the triplet excited state of a photosensitizer, is established in a novel donor–acceptor conjugate.

Aggregation-Induced Enhancement Effect of Gold Nanoparticles on Triplet Excited State

2013 ◽  
Vol 117 (51) ◽  
pp. 27088-27095 ◽  
Author(s):  
Wen Yang ◽  
Kunhui Liu ◽  
Di Song ◽  
Qian Du ◽  
Rennian Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Excited State ◽  
Enhancement Effect ◽  
Triplet Excited State

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

The unquenched triplet excited state of the fluorescent OFF/ON Bodipy-derived molecular probe based on photo-induced electron transfer

2016 ◽  
Vol 15 (11) ◽  
pp. 1358-1365 ◽  
Author(s):  
Zafar Mahmood ◽  
Jianzhang Zhao
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Triplet State ◽  
Molecular Probe ◽  
Singlet Excited State ◽  
Triplet Excited State ◽  
Photo Induced Electron Transfer

Different from the singlet excited state (fluorescence), the triplet state of the probes is not quenched by photo-induced electron transfer.

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