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Tuning the Activation Wavelength of Photochromic Oxazines
Author(s) -
Swaminathan Subramani,
GarciaAmorós Jaume,
Thapaliya Ek Raj,
ll Santi,
Captain Burjor,
Raymo Françisco M.
Publication year - 2016
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201600141
Subject(s) - photoisomerization , photochromism , chromophore , photochemistry , substituent , quantum yield , chemistry , molecular switch , oxazines , visible spectrum , wavelength , materials science , fluorescence , isomerization , optoelectronics , molecule , catalysis , organic chemistry , optics , physics
The activation wavelength of a photochromic oxazine can be shifted bathochromically with the introduction of a methoxy substituent on the chromophore responsible for initiating the photochemical transformation. This structural modification permits switching under mild illumination conditions, enhances the photoisomerization quantum yield and ensures outstanding fatigue resistance. Thus, these results can guide the design of new members of this family of photoresponsive molecular switches with improved photochemical and photophysical properties.