Issue 1, 2019

Recyclable mechanoluminescent luminogen: different polymorphs, different self-assembly effects of the thiophene moiety and recovered molecular packing via simple thermal-treatment

Abstract

We report a purely organic recyclable mechanoluminescent luminogen (tPE-5-MeTh) with the combination of an AIEgen and a thiophene group as the self-assembly unit. As a result of the different self-assembly effects, two crystalline polymorphs were cultured from different solvents, which possess totally different packing modes and various inter/intramolecular interactions with opposite ML properties. Excitingly, the molecular packing status of tPE-5-MeTh could be adjusted through simple thermal-treatment, offering recoverability and controllability of its ML activity. These results provide a new avenue for rational molecular design, convenience of potential applications and deep understanding of the inherent mechanism.

Graphical abstract: Recyclable mechanoluminescent luminogen: different polymorphs, different self-assembly effects of the thiophene moiety and recovered molecular packing via simple thermal-treatment

Supplementary files

Article information

Article type
Research Article
Submitted
18 Aug. 2018
Accepted
07 Sept. 2018
First published
07 Sept. 2018

Mater. Chem. Front., 2019,3, 32-38

Recyclable mechanoluminescent luminogen: different polymorphs, different self-assembly effects of the thiophene moiety and recovered molecular packing via simple thermal-treatment

C. Wang, Y. Yu, Z. Chai, F. He, C. Wu, Y. Gong, M. Han, Q. Li and Z. Li, Mater. Chem. Front., 2019, 3, 32 DOI: 10.1039/C8QM00411K

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