Second harmonic generation diagnostic of layer-by-layer deposition from Disperse Red 1 -: functionalized maleic anhydride copolymer
Second harmonic generation diagnostic of layer-by-layer deposition from Disperse Red 1 -: functionalized maleic anhydride copolymer
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DOI：
10.1016/j.optmat.2006.08.009
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发表时间：
2007-08-01
影响因子：
3.9
通讯作者：
Simionescu, Bogdan C.
中科院分区：
文献类型：
--
作者：
Aldea, Gabriela;Gutierrez, Hector;Simionescu, Bogdan C.
聚电解质的逐层静电组装被证明是一种越来越丰富和通用的技术，用于形成具有广泛的电、磁和光学性质的多层薄膜。本文合成了一种含有分散红I基团的新型非线性光学（NLO）马来酸共聚物，通过交替吸附聚丙烯胺盐化（PAH）和马来酸共聚物衍生物构建了多层共聚物，并对其二次谐波产生（SHG）性能进行了研究。所得到的多层组件表现出SHG，这是由共聚物中发色团的非中心对称排列引起的。SHG信号随着含发色团聚合物层数的增加而增加，最多可达5层。进一步的组装减少了信号。(c) 2006 Elsevier B.V.版权所有
Layer-by-layer (LBL) electrostatic assembly of polyelectrolytes is proving to be an increasingly rich and versatile technique for the formation of multilayered thin films with a wide range of electrical, magnetic, and optical properties. In the present work we synthesized a new non-linear optical (NLO) maleic acid copolymer containing Disperse Red I moieties, built-up multilayer assemblies by alternate adsorption of poly(allylamine hydrochloride) (PAH) and maleic copolymer derivative, and carried out an investigation on their second harmonic generation (SHG) properties. The resulting multilayer assemblies exhibit SHG which arises from the non-centrosymmetric alignment of the chromophores in the copolymer. The SHG signal increases with the number of chromophore-containing polymer layers, up to five layers. Further assembly reduces the signal. (c) 2006 Elsevier B.V. All rights reserved.