Study of aggregation induced emission of cyano-substituted oligo (p-phenylenevinylene) by femtosecond time resolved fluorescence

被引：32

作者：

Yan, Zi-Qi ^{[2
]}

Yang, Zhi-Yong ^{[2
,3
]}

Wang, Hai ^{[2
,3
]}

Li, Ai-Wu ^{[2
]}

Wang, Li-Ping ^{[1
]}

Yang, Han ^{[2
]}

Gao, Bing-Rong ^{[2
]}

机构：

[1] Jilin Univ, Hosp 1, Changchun 130012, Peoples R China

[2] Jilin Univ, State Key Lab Integrated Optoelect, Coll Elect Sci & Engn, Changchun 130012, Peoples R China

[3] Jilin Univ, Coll Phys, Changchun 130023, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2011年 / 78卷 / 05期

关键词：

Aggregation induced emission; Fluorescence up-conversion; Intramolecular charge transfer state; Local excited state; INTRAMOLECULAR CHARGE-TRANSFER; AMPLIFIED SPONTANEOUS EMISSION; LIGHT-EMITTING-DIODES; ELECTRON-TRANSFER; DIPOLE-MOMENTS; STATE; DERIVATIVES; CRYSTALS; DYNAMICS; COUMARIN-153;

D O I：

10.1016/j.saa.2011.01.056

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The aggregation induced emission (AIE) mechanism of the cyano-substituted oligo (p-phenylenevinylene)1,4-bis [1 -cyano-2-(4-(diphenylamino) phenyl) vinyl] benzene (TPCNDSB) is investigated by time resolved fluorescence technique. By reconstructing the time resolved emission spectra (TRES), it is found that in solvent of low polarity, the emission is mainly from the local emission (LE) state with high quantum yield, but in high polarity solvent, the emission is mainly from the intramolecular charge transfer (ICT) state, which is a relatively dark state, with low quantum yield. In crystal form, the restriction of transfer from LE state to ICT state results in efficient AIE. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1640 / 1645

页数：6

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