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Synthesis and Nitrite/Sulfite Electrochemical Response Investigation of Fluorene‐Based, Cross‐Linked Polyisocyanide
Author(s) -
Xu Kunfang,
Shi Wei,
Zhang Kesong,
Liu Sai,
Xie Zhengfeng
Publication year - 2021
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.202100173
Subject(s) - fluorene , materials science , electrochemistry , isocyanide , monomer , polymerization , thermal stability , polymer , chemical engineering , polymer chemistry , electrode , organic chemistry , chemistry , composite material , engineering
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 Ni 2+ ‐catalyzed polymerization of BIF. Chemical structure, elemental composition, accumulation state, thermal stability, microstructure, porous characteristics, and specific surface area of PBIF are characterized. NO 2 − and SO 3 2− 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 NO 2 − /SO 3 2− electrochemical response, suggesting that PBIF has a potential application prospect as novel non‐conjugated polymer‐based NO 2 − /SO 3 2− electrochemical probing material.