As compared to the widely studied linear‐type polyisocyanides (PICs), the development of cross‐linked PICs has not attracted much attention, and their applications in electrochemical fields are scarcely reported by far. Herein, a type of novel fluorene‐based isocyanide monomer (BIF), which bears two isocyano (─NC) groups, is successfully synthesized via Hofmann method with 9, 9‐bis (4‐aminophenyl) fluorene as the precursor. Corresponding fluorene‐based, cross‐linked PIC derivative (PBIF) is successfully prepared by Ni2+‐catalyzed polymerization of BIF. Chemical structure, elemental composition, accumulation state, thermal stability, microstructure, porous characteristics, and specific surface area of PBIF are characterized. NO2− and SO32− electrochemical responses of the modified glassy carbon electrode (PBIF/CS/GCE), which is fabricated with PBIF as the active material and chitosan (CS) as adhesive agent, is systematically analyzed here. Experimental results show that PBIF/CS/GCE exhibits strengthened NO2−/SO32− electrochemical response, suggesting that PBIF has a potential application prospect as novel non‐conjugated polymer‐based NO2−/SO32− electrochemical probing material.

No abstract

High-efficiency three-component polymerization involving benzoxazines, odorless isocyanides, and water to synthesize polyamide derivatives at room temperature was reported here.

No abstract