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Updated: Jun 14, 2025

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
Sequential Dynamic Fluorescence Switching Driven by Oxa-/Thiol-Michael Conjugate Addition-Elimination Reactions
1The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, People's Republic of China.
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A dynamic molecular system undergoing sequential reconfiguration and multi-state fluorescence switching via intramolecular oxa/thiol-Michael conjugate addition-elimination reactions is reported. Triggered sequentially by chemical, solvent, and most importantly pH stimuli, the controlled progression through distinct molecular states was monitored by ratiometric absorption/fluorescence and NMR spectroscopy. This stimulus-controlled fluorescence switching demonstrates utility for real-time monitoring of processes, like chemically induced polymer degradation.
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