Premium
Circular Photoinduced Electron Transfer in a Donor‐Acceptor‐Acceptor Triad
Author(s) -
Larsen Christopher B.,
Wenger Oliver S.
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201708207
Subject(s) - photoexcitation , triad (sociology) , acceptor , charge (physics) , electron transfer , photochemistry , chemistry , electron acceptor , materials science , atomic physics , molecular physics , physics , excited state , condensed matter physics , psychology , quantum mechanics , psychoanalysis
An electron‐donor‐acceptor‐acceptor (D‐A 1 ‐A 2 ) triad has been developed that provides the first proof‐of‐concept for a photoinitiated molecular circuit. After photoexcitation into an optical charge‐transfer transition between D and A 1 , subsequent thermal electron‐transfer from A 1 .− to A 2 is followed by geometric rearrangement in the D .+ ‐A 1 ‐A 2 .− charge‐separated state to form an ion‐pair contact. This facilitates “forward” charge recombination between A 2 .− and D .+ to complete the molecular circuit with an estimated quantum efficiency of 4 % in toluene at 298 K.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom