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A High Quantum Yield Diarylethene‐Backbone Photochromic Polymer
Author(s) -
Stellacci Francesco,
Bertarelli Chiaro,
Toscano Francesca,
C.Gallazzi Maria,
Zotti Gianni,
Zerbi Giuseppe
Publication year - 1999
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/(sici)1521-4095(199903)11:4<292::aid-adma292>3.0.co;2-v
Subject(s) - photochromism , diarylethene , materials science , quantum yield , conjugated system , polymer , photochemistry , monomer , thermal stability , yield (engineering) , visible spectrum , nanotechnology , optoelectronics , fluorescence , organic chemistry , optics , chemistry , composite material , physics
Photochromism that arises from the main polymer backbone is reported for the first time. The synthesized polymer with the diarylethene repeat unit is demonstrated to have photochromic properties superior to those of the monomer. The polymer has high thermal stability and its cyclization quantum yield (0.85) is very high for a photochromic compound. The closed, conjugated form of the polymer, which can be changed into the open, non‐conjugated form by irradiation with visible light, is oxidizable, thus opening the way to photoswitchable electronic applications.