Polarization-dependent optical gain in crystal and glass composed of excited-state intramolecular proton transfer organic molecules

被引：3

作者：

Lim, Hwan Hong

Boomadevi, Shanmugam

Jeon, Oc-Yeub

Kyhm, Kwangseuk

Cha, Myoungsik ^{[1
]}

Park, Sanghyuk

Park, Soo Young

机构：

[1] Pusan Natl Univ, Ctr Dielect & Adv Matter Phys, Dept Phys & Res, Pusan 609735, South Korea

[2] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea

来源：

MATERIALS LETTERS | 2007年 / 61卷 / 19-20期

基金：

新加坡国家研究基金会;

关键词：

optical materials and properties; luminescence; excited-state intramolecular proton transfer; amplified spontaneous emission; optical gain; organic single crystal;

D O I：

10.1016/j.matlet.2007.01.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Amplified spontaneous emission (ASE) associated with excited-state intramolecular proton transfer (ESIPT) was investigated in a single crystal and a glass of acetic acid 2-{4-[2-(2-hydroxy-phenyl)-4,5-diphenyl-imidazole-1-yl]-phenyl}-ethyl ester molecules. The polarization-dependent ASE was analyzed in an effort to understand the structural evolution involved in the ESIPT photo-cycle. From the analysis of the degree of polarization in the glass sample, we observed that polarization memory has been partially lost due to the ESIPT process in the molecule. The single crystal exhibited much larger transient optical gain than the glass sample. (c) 2007 Elsevier B.V All rights reserved.

引用

页码：4213 / 4215

页数：3

共 12 条

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