Pyrene-based blue AIEgens: tunable intramolecular conjugation, good hole mobility and reversible mechanochromism

Jie Yang; Qingxun Guo; Xiaodong Wen; Xuming Gao; Qian Peng; Qianqian Li; Dongge Ma; Zhen Li

doi:10.1039/C6TC02533A

Pyrene-based blue AIEgens: tunable intramolecular conjugation, good hole mobility and reversible mechanochromism†

Jie Yang,‡^a Qingxun Guo,‡^b Xiaodong Wen,^a Xuming Gao,^a Qian Peng,^c Qianqian Li,^a Dongge Ma*^b and Zhen Li*^a

* Corresponding authors

^a Department of Chemistry, Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Wuhan University, Wuhan 430072, China
E-mail: lizhen@whu.edu.cn, lichemlab@163.com
Fax: +86-27-68756757

^b Changchun Institute of Applied Chemistry, The Chinese Academy of Sciences, Changchun 130022, China
E-mail: mdg1014@ciac.jl.cn

^c Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, China

Abstract

Six blue AIEgens, including TPE-2Py(p,1), TPE-2Py(m,1), TPE-2Py(p,2), TPE-2Py(m,2), TPE-2Py(p,4) and TPE-2Py(m,4), were designed by combining a TPE core and pyrene side groups. Modifying the linkage modes of TPE (para to meta-position) and pyrene units (1- to 2- to 4-position), their EL emissions in standard OLEDs devices were tuned from sky blue (484 nm) to deep blue (452 nm). Because of the good interaction between the pyrene side groups, the target compounds showed enhanced hole-transporting ability. When fabricated as emitters in OLEDs with or without hole-transporting layers, all the emitters exhibited blue emissions and comparable EL performances. Also, all these AIEgens showed excellent reversible mechanochromism properties with different maximum emission peaks larger than 40 nm from the crystalline to the amorphous state, offering them additional applications in the opto-electronic field.

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DOI: https://doi.org/10.1039/C6TC02533A
Article type: Paper
Submitted: 19 Jun 2016
Accepted: 09 Aug 2016
First published: 10 Aug 2016

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J. Mater. Chem. C, 2016,4, 8506-8513

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Pyrene-based blue AIEgens: tunable intramolecular conjugation, good hole mobility and reversible mechanochromism

J. Yang, Q. Guo, X. Wen, X. Gao, Q. Peng, Q. Li, D. Ma and Z. Li, J. Mater. Chem. C, 2016, 4, 8506 DOI: 10.1039/C6TC02533A

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Journal of Materials Chemistry C

Pyrene-based blue AIEgens: tunable intramolecular conjugation, good hole mobility and reversible mechanochromism†

Abstract

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Pyrene-based blue AIEgens: tunable intramolecular conjugation, good hole mobility and reversible mechanochromism

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