Aggregation-induced emission

被引：3

作者：

Dong, Yongqiang ^{[1
,2
]}

Lam, Jacky Wing Yip ^{[1
]}

Qin, Arijun ^{[1
]}

Li, Zhen ^{[1
]}

Sun, Jiaxin ^{[3
]}

Kwok, Hot Sing ^{[3
]}

Tang, Ben Zhong ^{[1
,2
,3
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Chem, Clear Water Bay, Kowloon, Hong Kong, Peoples R China

[2] Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China

[3] Hong Kong Univ Sci & Technol, Ctr Display Res, Kowloon, Hong Kong, Peoples R China

来源：

ORGANIC LIGHT EMITTING MATERIALS AND DEVICES X | 2006年 / 6333卷

基金：

美国国家科学基金会;

关键词：

aggregation-induced emission; silole; tetraphenylethylene; fulvene; light-emitting diode; photoluminescence; electroluminescence; chromism; sensor;

D O I：

10.1117/12.679373

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New chromophoric molecules of 1,1-di(thiophen-2-yl)-2,3,4,5-tetraphenyl-silote (T2TPS), 9-(diphenylmethylene)-9H-fluorene (DPW), and tetraphenyletheneare (TPE) are designed and synthesized. When molecularly dissolved in common organic solvents, the molecules are practically nonemissive. Addition of poor solvents induces the molecules to aggregate, which turns the emission "on" and boosts their luminescence efficiencies dramatically ("aggregation-induced emission" or AIE). The photoluminescence (PL) of T2TPS and TPE layers adsorbed on the TLC plates can be turned "off" and "on" continuously and reversibly by solvent exposure and evaporation. Transformation from amorphous phase to crystalline structure blue-shifts the PL spectrum of T2TPS and enhances its intensity. A light-emitting devices (LEDs) device based on TPE is fabricated, which emits a blue light of 447 nm with a low turn-on voltage of 2.9 V.

引用

页数：10

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