All-optical poling and second harmonic generation diagnostic of layer-by-layer assembled photoactive polyelectrolytes

被引：5

作者：

Aldea-Nunzi, G. ^{[1
,2
]}

Chan, S. W. ^{[3
]}

Man, K. Y. K. ^{[3
]}

Nunzi, J. M. ^{[1
,4
]}

机构：

[1] Queens Univ, Dept Chem, 90 Bader Lane, Kingston, ON K7L 3N6, Canada

[2] Petru Poni Inst Macromol Chem Iasi, Iasi 700487, Romania

[3] Univ Angers 2, UMR CNRS 6200, Moltech Anjou, F-49045 Angers, France

[4] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

来源：

CHEMICAL PHYSICS | 2013年 / 420卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Second harmonic generation; Layer by layer self assembly; Polyelectrolyte thin film; All-optical poling; Orientation relaxation dynamics; CONTAINING CONJUGATED POLYMER; ULTRATHIN MULTILAYER FILMS; AZO-DYE; PHOTOINDUCED BIREFRINGENCE; ADSORPTION; ORIENTATION; DEPOSITION; DEVICES; PHOTOISOMERIZATION; NONCENTROSYMMETRY;

D O I：

10.1016/j.chemphys.2013.04.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Layer-by-layer (LBL) self-assembling was employed to produce dye-containing multilayer films with a nonlinear optical maleic acid copolymer containing Disperse Red 1 moieties. By alternate adsorption of maleic acid copolymer derivative and polyethyleneimine, films made from 1 to 30 bilayers were prepared and characterized. The effect of salt addition to the polyelectrolyte on the LBL self-assembly process was also studied. Second order optical nonlinearity chi((2)) of LBL films was studied by second harmonic generation and its stability was assessed by all-optical poling. A 'restoring force' model for the chromophore orientation in the LBL films is proposed to simulate the rotational motion. It clarifies the origin of the stability of the noncentrosymmetry in LBL films. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：7 / 14

页数：8

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