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Fastest Thermal Isomerization of an Azobenzene for Nanosecond Photoswitching Applications under Physiological Conditions
Author(s) -
GarciaAmorós Jaume,
DíazLobo Mireia,
ll Santi,
Velasco Dolores
Publication year - 2012
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.201207602
Subject(s) - photoisomerization , isomerization , azobenzene , nanosecond , photochemistry , metastability , thermal , materials science , relaxation (psychology) , optoelectronics , chemistry , optics , polymer , laser , organic chemistry , physics , thermodynamics , catalysis , composite material , psychology , social psychology
When speed is of the essence : After photoisomerization to its metastable cis form, an azo dye must undergo fast thermal isomerization back to the trans form to be suitable for real‐time information transmission. The azopyrimidine shown has a relaxation time ( τ ) of just 40 ns under physiological conditions, as well as high biocompatibility, as determined by Escherichia coli growth in its presence (see picture).