Formation of a long-lived radical pair in a Sn(iv) porphyrin–di(l-tyrosinato) conjugate driven by proton-coupled electron-transfer

2018 ◽  
Vol 54 (48) ◽  
pp. 6148-6152 ◽  
Author(s):  
Mirco Natali ◽  
Agnese Amati ◽  
Nicola Demitri ◽  
Elisabetta Iengo
Keyword(s):  
Electron Transfer ◽  
Radical Pair ◽  
Quenching Mechanism ◽  
Proton Coupled Electron Transfer ◽  
Tin Porphyrin ◽  
Pair State

A surprisingly long-lived radical pair state is achieved in a tin-porphyrin/l-tyrosine conjugate by exploiting a photochemical PCET quenching mechanism.

Photochemistry of rhodamine dye salts involving intra-ion-pair electron transfer

2003 ◽  
Vol 81 (6) ◽  
pp. 789-798 ◽  
Author(s):  
Guilford Jones II ◽  
Xiaochun Wang ◽  
Jingqiu Hu
Keyword(s):  
Electron Transfer ◽  
Ethyl Acetate ◽  
Rhodamine 6G ◽  
Radical Pair ◽  
Ion Pairs ◽  
Ion Pair ◽  
Thiocyanate Ion ◽  
Rhodamine Dye ◽  
Triplet Radical Pair ◽  
Pair State

The electron-transfer photochemistry of rhodamine 6G thiocyanate ion pairs has been investigated. For dye in a low polarity solvent, such as ethyl acetate, the emission of rhodamine 6G is significantly quenched by thiocyanate counterions. Laser photolysis of rhodamine 6G and thiocyanate in ethyl acetate was studied in detail with the identification of the reduced rhodamine 6G radical species (λmax = 410 nm). The growth and decay of the R6G radical could be accounted for in part by a mechanism involving initial formation of dye triplet followed by electron transfer which provides a triplet radical-pair state on a µs timescale.Key words: electron transfer, ion pair, rhodamine 6G, triplet state.

A Transient EPR Study of Electron Transfer in Tetrathiafulvalene-Aluminum(III) Porphyrin-Anthraquinone Supramolecular Triads

2017 ◽  
Vol 231 (2) ◽  
Author(s):  
Prashanth K. Poddutoori ◽  
Yuri E. Kandrashkin ◽  
Art van der Est
Keyword(s):  
Electron Transfer ◽  
Spin Polarization ◽  
Electron Spin ◽  
Charge Separation ◽  
Radical Pair ◽  
Electron Spin Polarization ◽  
Induced Charge ◽  
Pair State

AbstractThe stabilization of light-induced charge separation in two axially bound triads based on aluminum(III) porphyrin (AlPor) are investigated using the electron spin polarization patterns of the final radical pair state. In the triads, TTF-(Ph)

scholarly journals Electron–Nuclear Dynamics Accompanying Proton-Coupled Electron Transfer

2021 ◽  
Vol 143 (8) ◽  
pp. 3104-3112
Author(s):  
Yusuke Yoneda ◽  
S. Jimena Mora ◽  
James Shee ◽  
Brian L. Wadsworth ◽  
Eric A. Arsenault ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Nuclear Dynamics ◽  
Proton Coupled Electron Transfer

Facile proton-coupled electron transfer enabled by coordination-induced E–H bond weakening to boron

2021 ◽  
Author(s):  
Anthony Wong ◽  
Arunavo Chakraborty ◽  
Deependra Bawari ◽  
Guang Wu ◽  
Roman Dobrovetsky ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Proton Coupled Electron Transfer

Coordination induced bond weakening (CIBW) leads to facile PCET at various E–H bonds.

Sign in / Sign up

Export Citation Format

Share Document