A novel supramolecular self-assembly thin film with spontaneous polar order

被引：12

作者：

Kim, OK ^{[1
]}

Choi, LS

Zhang, HY

He, XH

Shih, YH

机构：

[1] USN, Res Lab, Div Chem, Washington, DC 20375 USA

[2] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21228 USA

来源：

THIN SOLID FILMS | 1998年 / 327卷

关键词：

self-assembly; polar order; supramolecules; non-linear optical materials;

D O I：

10.1016/S0040-6090(98)00622-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel supramolecular thin film in which a non-linear optical (NLO) chromophore is uniaxially included in the helical cavity of amylose, revealed a spontaneous self-assembly with a long-range polar order of the chromophores perpendicular to the film surface. This was manifested by a significantly large second harmonic generation (SHG) observed from solution-cast solid supramolecular thin films on a glass substrate without any external field. Such self-assembly/self-poling and the long-term polar stability of the supramolecular chromophores are thought to be due to the helical rigid-rod structure, their dipolar and/or chiral recognition in the ordering process following the polar initiation through the interface interaction of the chromophore with the glass substrate, and H-bonding among the ordered supramolecules. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：172 / 175

页数：4

共 16 条

[1] IMPROVED 2ND-HARMONIC GENERATION FROM LANGMUIR-BLODGETT-FILMS OF HEMICYANINE DYES [J].