Synthesis and characterization of accordion main-chain azo-dye polymers for second-order optical non-linearity

被引：0
|
作者：
Luo, JD
Qin, JG [1 ]
Kang, H
Ye, C
机构：
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
[2] Chinese Acad Sci, Inst Chem, Organ Solids Lab, Ctr Mol Sci, Beijing 100080, Peoples R China
来源：
POLYMER INTERNATIONAL | 2000年 / 49卷 / 11期
关键词：
accordion polymer; azo-dye; second-order optical non-linearity; synthesis;
D O I：
10.1002/1097-0126(200011)49:11<1302::AID-PI476>3.0.CO;2-M
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
New type accordion polymers with ate-dye chromophores as the major segments (up to 70% by weight) of the main chain for second optical non-linearity (NLO) are designed and synthesized by the Knoevenagel polycondensation between bis(carboxaldehyde) containing azobenzene and bis(cyanoacetate) comonomers. Several important properties for NLO application, such as solubility and thermal stability, are investigated, and the effects of linkage groups on the physical properties of polymers are also discussed in some detail. Poled films of one of these polymers show a relatively high resonant d(33) value of 33 pm V-1 by second harmonic generation (SHG) measurement, and their order parameter, which is determined to be 0.20 by UV-vis measurement, keep almost constant for 240 h at ambient temperature. (C) 2000 Society of Chemical Industry.
引用
收藏
页码：1302 / 1307
页数：6
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