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Femtosecond Isomerization in a Photochromic Molecular Switch
Author(s) -
Mockus Nicholas V.,
Rabinovich Daniel,
Petersen Jeffrey L.,
Rack Jeffrey J.
Publication year - 2008
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.200703677
Subject(s) - isomerization , photochromism , picosecond , femtosecond , excitation , excited state , chemistry , photochemistry , irradiation , photonics , materials science , optoelectronics , laser , physics , atomic physics , optics , organic chemistry , catalysis , quantum mechanics , nuclear physics
Back and forth : Irradiation in the metal‐to‐ligand charge transfer band of the bis S‐bonded complex shown (see scheme, left) yields the mixed S,O isomer and then the O,O isomer in two subsequent excited‐state reactions. Excitation of the S,O isomer at 355 nm yields the O,O isomer, while 532‐nm excitation of the O,O isomer yields the S,O isomer. Isomerization occurs on a femto‐ to picosecond timescale, demonstrating two‐color photonic switching.