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Fast Response Photochromic Mesostructures
Author(s) -
Wirnsberger G.,
Scott B. J.,
Chmelka B. F.,
Stucky G. D.
Publication year - 2000
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200010)12:19<1450::aid-adma1450>3.0.co;2-4
Subject(s) - photochromism , spiropyran , materials science , copolymer , photochemistry , nanotechnology , composite material , chemistry , polymer
Direct photochromism is observed for the mesostructured host–photochromic guest system reported here. Block‐copolymer/silica mesostructures were used as hosts for two photochromic dyes, a spirooxazine and a spiropyran. It is shown that the dyes are incorporated predominantly within the hydrophobic occlusions of the mesostructures (see Figure) and exhibit direct photochromism, with very fast response times.