Highly stable and fast blue color/fluorescence dual-switching polymer realized through the introduction of ether linkage between tetraphenylethylene and triphenylamine units

A novel electroactive/AIE-active polymer with tetraphenylethylene (TPE) and triphenylamine (TPA) units was prepared from a newly synthesized diamine, 4-tetraphenylethyleneoxy-4′,4″-diaminotriphenylamine, and cyclohexanedicarboxylic acid. By ingenious introduction of ether linkage between TPE and TPA units, the obtained polymer simultaneously exhibited high solid-state fluorescence, colorless neutral state, excellent electrochemistry stability, rapid responsive rate and long-term blue (one of the three primary colors) electrochromic/electrofluorochromic dual-switching, demonstrating great potential in optoelectronic applications.