Aggregation-enhanced emission and efficient electroluminescence of tetraphenylethene-cored luminogens

Zhengfeng Chang; Yibin Jiang; Bairong He; Jian Chen; Zhiyong Yang; Ping Lu; Hoi Sing Kwok; Zujin Zhao; Huayu Qiu; Ben Zhong Tang

doi:10.1039/C2CC37928G

Aggregation-enhanced emission and efficient electroluminescence of tetraphenylethene-cored luminogens†

Zhengfeng Chang,^a Yibin Jiang,^b Bairong He,^a Jian Chen,^a Zhiyong Yang,^c Ping Lu,^d Hoi Sing Kwok,^b Zujin Zhao,*^a Huayu Qiu^a and Ben Zhong Tang*^c

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* Corresponding authors

^a College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
E-mail: zujinzhao@gmail.com

^b Center for Display Research, The Hong Kong University of Science & Technology, Kowloon, Hong Kong, China

^c Department of Chemistry, Institute of Molecular Functional Materials, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
E-mail: tangbenz@ust.hk

^d State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China

Abstract

A new design of luminescent materials by decorating a tetraphenylethene core with four aromatic chromophores is proposed. The generated luminogens exhibit aggregation-enhanced emission and excellent solid-state fluorescence efficiency (93–99%). Efficient non-doped OLEDs based on them afford remarkable efficiencies up to 11 cd A⁻¹.

Chemical Communications

Aggregation-enhanced emission and efficient electroluminescence of tetraphenylethene-cored luminogens†

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Aggregation-enhanced emission and efficient electroluminescence of tetraphenylethene-cored luminogens

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