Achieving very bright mechanoluminescence from purely organic luminophores with aggregation-induced emission by crystal design

Chemical Science
Bingjia XuMartin R Bryce

Abstract

Although bright organic mechanoluminescence (ML) has been observed for a few luminophores with aggregation-induced emission (AIE), details of the positive effect of AIE on ML performance remain unclear and a feasible design principle for AIE-ML compounds has not yet been presented. Herein, an effective strategy for the molecular design of efficient AIE-ML materials is demonstrated, based on tetraphenylethene (TPE) building blocks with formyl substituents, which yield non-centrosymmetric crystal structures with prominent piezoelectric properties for molecular excitation combined with AIE features for intense emission. Following this approach, three AIE-active compounds have been developed and are found to show unique ML characteristics. Furthermore, the results of single crystal X-ray analysis and density functional theory (DFT) calculations suggest that the ML performance would probably be further enhanced by creating molecules with larger dipolar moments and enhanced AIE properties.

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Citations

Aug 10, 2018·Chemistry, an Asian Journal·Eethamukkala UbbaZhenguo Chi
Dec 20, 2018·Angewandte Chemie·Sanjoy Mukherjee, Pakkirisamy Thilagar
Sep 30, 2016·Chemistry : a European Journal·George Rajendra KumarPakkirisamy Thilagar
Sep 15, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Yu PeiZhongmin Su
Jan 4, 2018·Journal of Computational Chemistry·Torsten SachseMartin Presselt
Jul 7, 2018·Chemical Communications : Chem Comm·Qikun SunWenjun Yang
Dec 3, 2016·Faraday Discussions·Yuancheng WangBen Zhong Tang
Oct 3, 2017·Chemical Communications : Chem Comm·Yujun XieZhen Li
May 17, 2018·Chemical Communications : Chem Comm·Fan LiuZhen Li
Dec 7, 2017·Chemical Communications : Chem Comm·Qikun SunWenjun Yang
Feb 28, 2017·Chemical Communications : Chem Comm·Yang JiangMartin R Bryce
Jan 23, 2021·The Journal of Physical Chemistry Letters·Bibhisan RoyPartha Hazra
Apr 1, 2021·Advanced Materials·Yixi Zhuang, Rong-Jun Xie
Jan 25, 2018·ACS Applied Materials & Interfaces·Jianbo XiongXian-He Bu
Dec 29, 2021·The Journal of Physical Chemistry Letters·You LiDajun Ding
Dec 10, 2021·Chemistry : a European Journal·Ana Clara B RodriguesJ Sérgio Seixas de Melo

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Methods Mentioned

BETA
X-ray
differential scanning calorimetry

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