Selective Expression of Chromophores in a Single Molecule: Soft Organic Crystals Exhibiting Full‐Colour Tunability and Dynamic Triplet‐Exciton Behaviours. (23rd January 2020)

• Record Type: Journal Article
• Authors: Li, Wenlang; Huang, Qiuyi; Mao, Zhu; Zhao, Juan; Wu, Huiyan; Chen, Junru; Yang, Zhan; Li, Yang; Yang, Zhiyong; Zhang, Yi; Aldred, Matthew P.; Chi, Zhenguo
• Is Part Of: Angewandte Chemie. Volume 132:Number 9(2020)
• Page Start: 3768
• Page End: 3774
• Publication Date: 2020-01-23
• Subjects: Kristall-Engineering -- Vollfarbige Emission -- Lumineszenz -- Weiche Moleküle -- Triplett-Exziton; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201915556
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Soft luminescent materials are attractive for optoelectronic applications, however, switching dominant chromophores for property enrichment remains a challenge. Herein, we report the first case of a soft organic molecule (DOS) featuring selective expression of chromophores. In response to various external stimuli, different chromophores of DOS can take turns working through conformation changes, exhibiting full‐colour emissions peaking from 469 nm to 583 nm from ten individual single crystals. Dynamic triplet‐exciton behaviours including thermally activated delayed fluorescence (TADF), room‐temperature phosphorescence (RTP), mechanoluminescence (ML), and distinct mechano‐responsive luminescence (MRL) can all be realized. This novel designed DOS molecule provides a multifunctional platform for detection of volatile organic compounds (VOCs), multicolour dynamic displays, sensing, anticounterfeiting, and hopefully many others. Abstract : Kristallklare Farben : Die selektive Expression von Chromophoren wird in einem weichen organischen Molekül erreicht. Als Reaktion auf verschiedene äußere Reize können durch die Konkurrenz verschiedener Chromophore um die Emission vollfarbige Emissionen von zehn verschiedenen individuellen Einkristallen und dynamisches Triplett‐Exziton‐Verhalten realisiert werden.