Open AccessArylazopyrazoles: Azoheteroarene Photoswitches Offering Quantitative Isomerization and Long Thermal Half-Lives
Author(s) -
Claire E. Weston,
Robert D. Richardson,
Peter Haycock,
Andrew J. P. White,
Matthew J. Fuchter
Publication year - 2014
Publication title -
journal of the american chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.115
H-Index - 612
eISSN - 1520-5126
pISSN - 0002-7863
DOI - 10.1021/ja505444d
Subject(s) - chemistry , isomerization , photoswitch , planar , thermal stability , thermal , photochemistry , computational chemistry , stereochemistry , organic chemistry , thermodynamics , physics , computer graphics (images) , computer science , catalysis
Arylazopyrazoles, a novel class of five-membered azo photoswitches, offer quantitative photoswitching and high thermal stability of the Z isomer (half-lives of 10 and ∼1000 days). The conformation of the Z isomers of these compounds, and also the arylazopyrroles, is highly dependent on the substitution pattern on the heteroarene, allowing a twisted or planar geometry, which in turn has a significant impact on the electronic spectral properties of the compounds.
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