Electron transfer quenching of singlet and triplet excited states of flavins and lumichrome by aromatic and aliphatic electron donors

2003 ◽  
Vol 5 (19) ◽  
pp. 4123 ◽  
Author(s):  
G. Porcal ◽  
S. G. Bertolotti ◽  
C. M. Previtali ◽  
M. V. Encinas
Keyword(s):  
Electron Transfer ◽  
Excited States ◽  
Electron Donors ◽  
Triplet Excited States

Electron Transfer from the Singlet and Triplet Excited States of Ru(dcbpy)2(NCS)2into Nanocrystalline TiO2Thin Films

2002 ◽  
Vol 106 (17) ◽  
pp. 4396-4404 ◽  
Author(s):  
Jani Kallioinen ◽  
Gábor Benkö ◽  
Villy Sundström ◽  
Jouko E. I. Korppi-Tommola ◽  
Arkady P. Yartsev
Keyword(s):  
Electron Transfer ◽  
Excited States ◽  
Triplet Excited States

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...

scholarly journals Long-lived triplet charge-separated state in naphthalenediimide based donor–acceptor systems

2021 ◽  
Author(s):  
Alexander Aster ◽  
Christopher Rumble ◽  
Anna-Bea Bornhof ◽  
Hsin-Hua Huang ◽  
Naomi Sakai ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited States ◽  
Donor Acceptor ◽  
Triplet Excited States ◽  
Ultrafast Electron Transfer

Ultrafast electron transfer from singlet and triplet excited states in equilibrium results in the population of both singlet and triplet charge-separated states.

scholarly journals Divergent Photocatalytic Reactions of α-Ketoesters Under Triplet Sensitization and Photoredox Conditions

2020 ◽  
Author(s):  
Jian Zheng ◽  
Xiao Dong ◽  
Tehshik Yoon
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Transition Metal ◽  
Excited States ◽  
Reactive Intermediates ◽  
Organic Substrates ◽  
Reaction Conditions ◽  
Electron Transfer Pathways ◽  
Photocatalytic Reactions ◽  
Triplet Excited States

The long-lived triplet excited states of transition metal photocatalysts can activate organic substrates via either energy- or electron-transfer pathways, and the rates of these processes can be influenced by rational tuning of the reaction conditions. The characteristic reactive intermediates that are generated by each of these activation modalities, however, are distinct and can exhibit very different reactivity patterns. Herein, we show that the photocatalytic reactions of benzoylformate esters with alkenes can be directed towards either Paternò–Büchi cycloadditions under conditions that favor energy transfer or allylic functionalization reactions under superficially similar conditions that favor electron transfer. These studies provide a framework for designing other divergent photocatalytic methods that produce different sets of reaction outcomes under photoredox and triplet sensitization conditions.

Preparation of Bodipy–ferrocene dyads and modulation of the singlet/triplet excited state of bodipy via electron transfer and triplet energy transfer

2016 ◽  
Vol 4 (14) ◽  
pp. 2843-2853 ◽  
Author(s):  
Xueyan Wu ◽  
Wenting Wu ◽  
Xiaoneng Cui ◽  
Jianzhang Zhao ◽  
Mingbo Wu
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Excited State ◽  
Excited States ◽  
Singlet Excited State ◽  
Triplet Excited State ◽  
Triplet Energy ◽  
Triplet Excited States ◽  
Triplet Energy Transfer

Bodipy–ferrocene dyads were prepared for reversible electrochemical switching of the singlet excited state (fluorescence), as well as the triplet excited states of Bodipy.

Involvement of triplet excited states in the electron transfer photodegradation of cinnamic acids using pyrylium and thiapyrylium salts as photocatalysts

2007 ◽  
Vol 6 (8) ◽  
pp. 848 ◽  
Author(s):  
M. Luisa Marín ◽  
Ana Miguel ◽  
Lucas Santos-Juanes ◽  
Antonio Arques ◽  
Ana M. Amat ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited States ◽  
Cinnamic Acids ◽  
Triplet Excited States
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