Unusual photoluminescence characteristics of tetraphenylpyrene (TPPy) in various aggregated morphologies

被引：39

作者：

Oyamada, T

Akiyama, S

Yahiro, M

Saigou, M

Shiro, M

Sasabe, H

Adachi, C

机构：

[1] Chitose Inst Sci & Technol, Dept Photon Mat Sci, Chitose, Hokkaido 0668655, Japan

[2] Sci & Technol Res Ctr Inc, Optoelect Mat Lab, Res & Technol Dev Div, Mitsubishi Chem Grp, Yokohama, Kanagawa 2778502, Japan

[3] Kyoto Univ, Int Innovat Ctr, Kyoto 6068501, Japan

[4] Rigaku Co, Appl Lab, Tokyo 1968666, Japan

[5] Kyushu Univ, Ctr Future Chem, Fukuoka 8190395, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 421卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2005.12.102

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：

We found that 1,3,6,8-tetraphenylpyrene (TPPy) demonstrates unusual photoluminescence (PL) characteristics in the solid-state morphologies. We investigated the PL characteristics of TPPy in various morphologies including powder, deposited film, and solutions. The TPPy powder (A), which was prepared through column chromatography, recrystallization, and train sublimation, showed blue fluorescence with a peak of maximum wavelength of = 451 nm. The TPPy powder (B), which was obtained by thermal annealing of TPPy powder (A) in a quartz tube in nitrogen, showed green fluorescence with gimel(max) = 510 nm. Furthermore, the TPPy powder (B) was reversibly converted into TPPy powder (A) by recrystallization. We conclude that TPPy dimers form locally in the TPPy monomer aggregates during thermal annealing and redissociate into the monomer states during recrystallization. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：295 / 299

页数：5

共 23 条

[1] High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials [J].