Formation of nanostructures of hexaphenylsilole with enhanced color-tunable emissions

被引：45

作者：

Bhongale, CJ

Chang, CW

Diau, EWG ^{[1
]}

Hsu, CS

Dong, YQ

Tang, BZ

机构：

[1] Natl Chiao Tung Univ, Inst Mol Sci, Dept Appl Chem, Hsinchu 30050, Taiwan

[2] Natl Chiao Tung Univ, Ctr Interdisciplinary Mol Sci, Hsinchu 30050, Taiwan

[3] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 419卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2005.12.017

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：

Nanostructures of 1,1,2,3,4,5-hexaphenylsilole (HPS) of various types were obtained on simple reprecipitation with THF as solvent and water as non-solvent. The formation and evolution of these nanostructures were monitored with scanning electron microscopy. Using picosecond time-correlated single-photon counting, we observed enhanced emission and fluorescence lifetimes at volume fractions 70-90% of added water. We report the first enhanced color-tunable emissions of a conjugated organic compound (HPS) due to the formation of nanoflowers, nanoglobules and microglobules, and provide time scales for those nanostructures and the corresponding intermolecular interactions in the aggregates. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：444 / 449

页数：6

共 33 条

[1] Enhanced emission and its switching in fluorescent organic nanoparticles [J].