Triphenylpyrazine: methyl substitution to achieve deep blue AIE emitters

Haozhong Wu; Jiajie Zeng; Zeng Xu; Bing Zhang; Han Zhang; Yuyu Pan; Zhiming Wang; Dongge Ma; Anjun Qin; Ben Zhong Tang

doi:10.1039/C9TC04459K

Triphenylpyrazine: methyl substitution to achieve deep blue AIE emitters†

Haozhong Wu,^a Jiajie Zeng,^a Zeng Xu,^a Bing Zhang,^a Han Zhang,

^a Yuyu Pan,

^b Zhiming Wang,

*^ab Dongge Ma,^a Anjun Qin

^a and Ben Zhong Tang

*^ac

Author affiliations

* Corresponding authors

^a State Key Laboratory of Luminescent Materials and Devices, Center for Aggregation-Induced Emission, Key Laboratory of Luminescence from Molecular Aggregates of Guangdong Province, Guangzhou International Campus, South China University of Technology (SCUT), Guangzhou 510640, China
E-mail: wangzhiming@scut.edu.cn

^b School of Petrochemical Engineering, Shenyang University of Technology (SUT), Liaoyang 111003, China

^c Department of Chemistry, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
E-mail: tangbenz@ust.hk

Abstract

Based on our deep comprehension of the unique excited state decay process of tetraphenylpyrazine derivatives, triphenylpyrazine-3-carbazole (TrPP-3C) was designed by replacing the phenyl group with a methyl group at the 3-position of pyrazine. Compared to the values for its model tetraphenylpyrazine-3-carbazole (TPP-3C), the Commission International de l’Eclairage (CIE) coordinates of TrPP-3C shifted to the more valuable deep-blue region in the non-doped device, demonstrating that the in-depth study of the excited state distribution was of great significance for the development of a new aggregation-induced emission (AIE) building block.

This article is part of the themed collection: 2019 Journal of Materials Chemistry C HOT Papers

Journal of Materials Chemistry C

Triphenylpyrazine: methyl substitution to achieve deep blue AIE emitters†

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