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Second order non‐linear optical materials based on poly( p ‐chloromethyl styrene)
Author(s) -
Zhang Xi,
Wang Peng,
Zhu Peiwang,
Ye Cheng,
Xi Fu
Publication year - 2000
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20000901)201:14<1853::aid-macp1853>3.0.co;2-3
Subject(s) - styrene , chromophore , atom transfer radical polymerization , polymer chemistry , methyl methacrylate , methacrylate , azo compound , polymer , radical polymerization , polymerization , materials science , chemistry , photochemistry , copolymer , organic chemistry
The second order non‐linear optical (NLO) materials were prepared based on poly( p ‐chloromethyl styrene) (PCMS). Two kinds of NLO chromophores, i. e. azo dye Disperse Red 1 (4‐[ N ‐ethyl‐ N ‐(2‐hydroxy‐ethyl)‐amino]‐4′‐nitroazobenzene) and 4‐hydroxy‐4′‐nitrostilbene, were introduced to the poly( p ‐chloromethyl styrene) by etherification. On the other hand, the acrylates and methacrylates of these two kinds of chromophores were co‐polymerzed with methyl methacrylate (MMA) with PCMS as an initiator by atom transfer radical polymerization (ATRP). The obtained polymers were characterized by GPC, DSC and second‐harmonic generation (SHG) measurements. The SHG signals began to decline at temperatures above their T g 's, which might result from their branched structures.