Affiliation:
1. Guangxi Key Laboratory of Electrochemical and Magneto‐chemical Functional Materials, College of Chemistry and Bioengineering Guilin University of Technology Guilin China
2. Department of Civil Engineering Qingdao University of Technology Linyi China
3. State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of Technology Guangzhou China
Abstract
AbstractPhotoelectric functional materials with electrochemical reversible activity and fluorescence intensities have attracted significant interest due to their wide range of applications in optoelectronic devices. In this work, a series of photoresponsive and electroactive monomers based on thieno[3.4‐c]pyrrole‐4,6‐dione (TPD) are synthesized and characterized. They possess planar geometry with smaller dihedral angles owing to the existence of a noncovalent conformation lock coming from the S atoms and the O atoms. Crystallographic, spectroscopic, and computational results reveal that the introduction of the TPD unit can endow the monomers with aggregation‐induced emission (AIE), reduced energy levels, and increased electrochemical activity. The monomers were successfully polymerized through the electrochemical method, and the corresponding polymers displayed reversible electrochemical activity and stability. Moreover, polymer films based on 3,3‐dimethyl‐3,4‐dihydro‐2H‐thieno[3,4‐b][1,4]dioxepine (ProE)‐TPD have electrochromic properties in the near‐infrared field with a high value of optical contrast ratio (∆T) of 27.1% at 1000 nm.
Funder
National Natural Science Foundation of China