Synthesis and Nitrite/Sulfite Electrochemical Response Investigation of Fluorene-Based, Cross-Linked Polyisocyanide,Macromolecular Materials and Engineering

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Synthesis and Nitrite/Sulfite Electrochemical Response Investigation of Fluorene-Based, Cross-Linked Polyisocyanide
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2021-06-21 , DOI: 10.1002/mame.202100173
Kunfang Xu ₁ , Wei Shi ₁ , Kesong Zhang ₁ , Sai Liu ₁ , Zhengfeng Xie ₁

Affiliation

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.

中文翻译：

基于芴的交联聚异氰化物的合成和亚硝酸盐/亚硫酸盐电化学响应研究

与广泛研究的线型聚异氰化物（PICs）相比，交联PICs的发展并未引起太多关注，其在电化学领域的应用也鲜有报道。在此，以9, 9-双（4-氨基苯基）芴为前驱体，通过霍夫曼法成功合成了一种带有两个异氰基（─NC）基团的新型芴基异氰化物单体（BIF）。相应的芴基交联PIC衍生物（PBIF）通过Ni ²⁺催化的BIF聚合成功制备。表征了 PBIF 的化学结构、元素组成、积累状态、热稳定性、微观结构、多孔特性和比表面积。NO ₂^-和 SO ₃^2-本文系统地分析了以 PBIF 为活性材料和壳聚糖 (CS) 为粘合剂制备的改性玻璃碳电极 (PBIF/CS/GCE) 的电化学响应。实验结果表明PBIF/CS/GCE表现出增强的NO ₂^- /SO ₃^2-电化学响应，表明PBIF作为新型非共轭聚合物基NO ₂^- /SO ₃^2-电化学探测材料具有潜在的应用前景。

更新日期：2021-08-17

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