New side-chain polyurethanes with highly conjugated push-pull chromophores for second order NLO applications

被引：31
作者：
Caruso, U
Casalboni, M
Fort, A
Fusco, M
Panunzi, B
Quatela, A
Roviello, A
Sarcinelli, F
机构：
[1] Univ Naples Federico II, Dipartimento Chim, I-80126 Naples, Italy
[2] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy
[3] IPCMS, CNRS, Opt Nonlineaire & Optoelect Grp, F-67034 Strasbourg, France
[4] Univ Naples Federico II, Dipartimento Sci Alimenti, I-80155 Naples, Italy
来源：
OPTICAL MATERIALS | 2005年 / 27卷 / 12期
关键词：
second order nonlinear optics; push-pull chromophores; polymers;
D O I：
10.1016/j.optmat.2004.11.009
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Six new side-chain polyurethanes with large molecular hyperpolarizabilities were synthesized by reaction of ethylenic and/or azo bridged push-pull chromophoric monomers with tolylene 2,4-diisocyanate. The NLO-phores show different conjugation pathway but analogous donor/withdrawing substituents. The chemical and thermal properties of the chromophores and of the polymers were examined. Evaluation of the second order NLO properties was performed by EFISH determination of mu beta on the monomers, and by SHG measurements on some amorphous thin films obtained from polymers through spin-coating technique. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：1800 / 1810
页数：11
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