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Photoinduced switching in nanocomposites of azobenzene and molecular sieves
Author(s) -
Marlow Frank,
Hoffmann Katrin,
Caro Jürgen
Publication year - 1997
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/adma.19970090711
Subject(s) - azobenzene , isomerization , materials science , molecular sieve , nanocomposite , photochemistry , absorbance , photochromism , birefringence , polymer , nanotechnology , composite material , organic chemistry , catalysis , optics , chemistry , physics
A model system for the photoinduced rearrangement of adsorbates in molecular sieves —composites that hold promise as materials with new electronic and optical properties—is the photoinduced cis–trans isomerization of azobenzene (Az) in the zeolites AIPO 4 ‐5, ZSM‐5, and silicalite −1. A spectroscopic investigation presented demonstrates that reversible intrazeolite isomerization of Az causes large changes in the optical properties of the composites, e.g., in absorbance and birefringence, making the materials of interest for optical switching.