Affiliation:
1. College of Materials Science and Opto‐Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing P. R. China
2. Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing P. R. China
Abstract
AbstractPoly‐substituted olefins, one of the most important aggregation‐induced emission luminogens (AIEgens), have garnered significant attention due to their various applications in chemical‐ and bio‐sensing, bio‐imaging, and opto‐electronics. However, the synthetic methods for these olefins remain limited, impeding the progress of AIEgens. This study introduces an unprecedented cross‐coupling reaction between aryl sulfonium triflates and tosylhydrazones from naturally abundant thioethers and ketones. The generality of this method is exemplified by the facile synthesis of over forty poly‐substituted olefins. Importantly, the luminescent properties of these AIEgens (e.g., quantum yield and emission color) can be easily tuned by adjusting the substituents of the electrophile and nucleophile substrates, exhibiting excellent performance in bio‐imaging. Notably, the mechanistic studies reveal the critical role of β‐H elimination in the formation of the double bond. This contribution provides an efficient method to synthesize poly‐substituted olefins, pushing forward the development of AIEgens.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Beijing Municipality