Microcrystals of polydiacetylene derivatives and their linear and nonlinear optical properties

被引：61

作者：

Nakanishi, H ^{[1
]}

Katagi, H

机构：

[1] Tohoku Univ, Interdisciplinary Res Ctr, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Inst Chem React Sci, Sendai, Miyagi 9808577, Japan

来源：

SUPRAMOLECULAR SCIENCE | 1998年 / 5卷 / 3-4期

关键词：

organic microcrystals; excitonic absorption; nonlinear optical property;

D O I：

10.1016/S0968-5677(98)00021-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Organic microcrystals which are expected to have interesting and fascinating physical properties were fabricated by a reprecipitation method as aqueous dispersions. Many kinds of organic compounds have been microcrystallized by this convenient method. The size control has been extensively investigated for a polydiacetylene and succeeded in the range from several lens of nanometers to several micrometers by adjusting the temperature and concentration. Linear optical properties of these well-defined polydiacetylene microcrystals have been investigated and interesting size and temperature dependences of excitonic absorption are demonstrated. Nonlinear optical (NLO) properties of polydiacetylene microcrystals have also been evaluated by means of a Z-scan technique, and an extremely high nonlinear refractive index at the resonant wavelength was shown. (C) 1998 Elsevier Science Limited. Air rights reserved.

引用

页码：289 / 295

页数：7

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