Conformational effect on fluorescence emission of tetraphenylethylene-based metallacycles

• Published in: Chinese chemical letters Vol. 32; no. 5; pp. 1691 - 1695
• Main Authors: Guo, Zhewen, Zhao, Jun, Liu, Yuhang, Li, Guangfeng, Wang, Heng, Hou, Yali, Zhang, Mingming, Li, Xiaopeng, Yan, Xuzhou
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2021; School of Chemistry and Chemical Engineering,Frontiers Science Center for Transformative Molecules,Shanghai Jiao Ton g University,Shanghai 200240,China%College of Chemistry and Environmental Engineering,Shenzhen University,Shenzhen 518055,China%State Key Laboratory for Mechanical Behavior of Materials,Shaanxi International Research Center for Soft Matter,School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an 710049,China
• Subjects: Aggregation-induced emission; Conformational effect; Coordination-driven self-assembly; Metallacycles; Structure-property relationship; Aggregation-induced emission; Structure-property relationship; Conformational effect; Metallacycles; Coordination-driven self-assembly
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2020.12.028

Herein, we designed and constructed two metallacycles to illustrate the conformational effect of isomeric AIE fluorophores on the platform of supramolecular coordination complexes (SCCs). [Display omitted] Herein, we designed and constructed two metallacycles, 1 and 2, to illustrate the conformational effect of isomeric AIE fluorophores on the platform of supramolecular coordination complexes (SCCs). Specifically, the dangling phenyl rings in TPE units of the metallacycle 1 align completely outside the main cyclic structure, while in the metallacycle 2, these phenyl rings align half inside and half outside. The experimental results showed that two metallacycles exhibited different behaviors in terms of AIE fluorescence and chemical sensing, which could be attributed to the subtle structural difference of the TPE units. This work represents the unification of topics such as self-assembly, AIE, and chemical sensing, and further promotes the understanding for the structure-property relationship of isomeric AIE fluorophores.