Triplet population and depopulation rates of single terrylene molecules in p-terphenyl crystal

被引：17

作者：

Banasiewicz, M ^{[1
]}

Morawski, O ^{[1
]}

Wiacek, D ^{[1
]}

Kozankiewicz, B ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 414卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2005.08.120

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：

Fluorescence intensity correlation functions of single terrylene molecules in p-terphenyl crystals were measured within the temperature range 5-300 K. The analysis provided the population (k(23)) and depopulation (k(31)) intersystem crossing (ISC) rate constants of the lowest excited triplet state T-1. These rates increase continuously with temperature, without any noticeable change at the 193 K, temperature of the order-disorder phase transition in p-terphenyl crystal. The depopulation channel composed of the exciting light intensity dependent T, -> T-n, absorption followed by the T-n -> S-1 ISC is important at higher temperatures. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：374 / 377

页数：4

共 12 条

[1]

BASCHE T, 1996, SINGLE MOL OPTICAL D, P85504

[2] STRUCTURE TRANSITION IN POLYPHENYL COMPOUNDS .1. CRYSTAL-STRUCTURE OF LOW-TEMPERATURE PHASE OF PARA TERPHENYL AT 113 K [J].