Amplified spontaneous emission from the film of poly(aryl ether) dendrimer encapsulating excited-state intramolecular proton transfer dye

被引：60

作者：

Kim, S

Park, SY

Yoshida, I

Kawai, H

Nagamura, T

机构：

[1] Seoul Natl Univ, Sch Mat Sci & Engn, Kwanak Ku, Seoul 151744, South Korea

[2] Shizuoka Univ, Elect Res Inst, Hamamatsu, Shizuoka 4328011, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2002年 / 106卷 / 36期

关键词：

D O I：

10.1021/jp021048x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nonresonant exponential amplification of the excited-state intramolecular proton transfer (ESIPT) emission has been investigated with the film of ESIPT dendrimer (QG2) by pico- and femtosecond laser experiments. The intrinsic four-level nature of ESIPT and the reduced concentration quenching by dendritic effect made QG2 film an optical gain medium with the threshold intensity lower than 20 muJ/cm(2)/pulse. The characteristics of emission amplification are discussed in terms of the amplified spontaneous emission (ASE) related with ESIPT.

引用

收藏

页码：9291 / 9294

页数：4

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