Second order nonlinearity in oligoamides

被引：1

作者：

Bhattacharya, M ^{[1
]}

Das, PK ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Inorgan & Phys Chem, Bangalore 560012, Karnataka, India

来源：

SYNTHETIC METALS | 2005年 / 155卷 / 02期

关键词：

coupling reactions; water-soluble salts of oligoamides; self-assembly; first hyperpolarizability;

D O I：

10.1016/j.synthmet.2005.09.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the synthesis and the first hyperpolarizabilities of a series of water-soluble sodium salts of oligoamides of all the three isomeric aminobenzoic acids. The first hyperpolarizabilities of the ortho and para isomers with different number of repeat units are comparable but higher than that of the corresponding meta isomer. The beta value increases with the number of repeat units until a point and then decreases. This unexpected behaviour is attributed to the aggregation due to the presence of a hydrophobic backbone containing a water-soluble polar head group. Dilution experiments using the HRS confirm the formation of aggregates in water. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：389 / 392

页数：4

共 14 条

[1] VERY LARGE QUADRATIC NONLINEARITIES IN SOLUTION OF 2 PUSH-PULL POLYENE SERIES - EFFECT OF THE CONJUGATION LENGTH AND OF THE END GROUPS [J].