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Synthesis and Properties of Two Second‐Order Nonlinear Optical Polymers: an Attempt toward the Balance between Nonlinearity and Transparence against Intrinsic Trade‐off
Author(s) -
LI SuYue,
LI ZhongAn,
ZHU ZhiChao,
ZHANG Wei,
HUANG Ting,
LI Zhen,
YE Cheng,
QIN JinGui
Publication year - 2008
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200890063
Subject(s) - chromophore , chemistry , nonlinear optical , polymer , styrene , arylene , nonlinear system , nonlinear optics , absorption (acoustics) , polymer chemistry , photochemistry , organic chemistry , copolymer , materials science , aryl , composite material , physics , alkyl , quantum mechanics
Two new poly(arylene ether sulfone)s ( P1 and P2 ) with two new accepting group (TCF)‐based chromophores ( 1 and 2 ) in side chains, respectively, were designed and synthesized. The two chromophores contain the same electron donating group (dialkylamino group) and the same accepting group (TCF), but different conjugation bridges. Compound 2 contains a combined conjugation bridge (phenyl‐diazene plus styrene), but the bridge of 1 is much shorter (styrene only). A variety of optical properties were studied. Compared with P1 , P2 exhibited comparable nonlinear optical coefficient ( d 33 ) and better transparency (the maximum absorption was blue‐shifted by 16 nm), though the conjugation bridge of chromophore 2 in P2 was much longer than that of 1 in P1 . This result may help design nonlinear optical polymers achieving the balance between nonlinearity and transparence against the intrinsic trade‐off.