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Updated: Dec 30, 2025

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
Turn-on fluorescence in a pyridine-decorated tetraphenylethylene: the cooperative effect of coordination-driven
Ning Wang1, Junying Zhang, Xing-Dong Xu
1National Engineering Research Center for Colloidal Materials, Key Laboratory of Special Functional Aggregated Materials of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, Shandong, China. xuxd@sdu.edu.cn.
Abstract:
A tetrapyridine-decorated tetraphenylethene (TPE) ligand 1 was designed, which, upon interacting with silver ions, displayed "turn-on" fluorescence in a dilute solution. The fluorescence enhancement can be attributed to the cooperative effect of restriction of the intramolecular rotation by metal coordination and silver ion induced aggregation. Furthermore, the fluorescence turn-on performance of AIE molecules in a dilute solution leads to tunable fluorescence properties including white-light emission by simply mixing AIE and ACQ molecules together, which might bridge the gap between the AIE and ACQ phenomena for the construction of color-tunable fluorescence systems.

