NDLI: Easily crosslinkable side-chain azobenzene polymers for fast and persistent fixation of surface relief gratings

Content Provider	Royal Society of Chemistry (RSC)
Author	Han, Guang Sun, Qian Zhang, Hongtao Zhang, Huiqi Zhang, Yuying Chen, Jing
Copyright Year	2015
Abstract	A series of side-chain azobenzene (azo) homo- and copolymers with easily crosslinkable N-hydroxysuccinimide carboxylate-substituted azo moieties and relatively low glass transition temperatures were synthesized for rapid and persistent fixation of surface relief gratings (SRGs). These azo polymers exhibited good thermal stability and their films proved easily crosslinkable within 4–15 min with 1,6-hexanediamine under mild conditions with the crosslinking rates of copolymer films being faster than homopolymer films. Moreover, the formation speed and saturation modulation depth of the photoinduced SRGs increased both with a decrease in the flexible spacer length in azo homopolymers and with an increase in the azo contents in copolymers. Furthermore, considerably stabilized high quality SRGs were obtained after their post-fixation by crosslinking, as revealed by the negligible or rather small change of both the modulation depth of the crosslinked SRGs upon their exposure to high temperatures or organic solvents and the transparency of the crosslinked polymer films.
Starting Page	1410
Ending Page	1420
Page Count	11
File Format	HTM / HTML PDF
ISSN	11440546
Volume Number	39
Issue Number	2
Journal	New Journal of Chemistry
DOI	10.1039/c4nj01658k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Glass transition Azo compound Polymer N-Hydroxysuccinimide Copolymer Azobenzene
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Catalysis

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