联苯基交联聚异腈的亚硝酸根电化学响应行为  

Nitrite Electrochemical Response Properties of Biphenyl-based Crosslinked Polyisocyanide

作　　者：张克松 石伟 刘赛 杨昶 周心宇 ZHANG Kesong;SHI Wei;LIU Sai;YANG Chang;ZHOU Xinyu(Oil﹠Gas Field Applied Chemistry Key Laboratory of Sichuan Province,School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学化学化工学院油气田应用化学四川省重点实验室,成都610500

出　　处：《材料导报》2021年第12期12175-12180,共6页Materials Reports

基　　金：国家自然科学基金项目(21774103);西南石油大学青年科技创新团队(2017CXTD05)。

摘　　要：以联苯二胺为起始原料,采用Hofmann法成功制备出一种双官能异腈类化合物(M1),并通过Ni^(2+)催化聚合得到具有交联结构的聚异腈(P1)。以P1修饰的玻碳电极(GCE)作为工作电极对亚硝酸根(NO_(2)^(-))的电化学响应行为进行了分析,其差分脉冲伏安(DPV)电流信号在0.5~200μmol/L浓度范围内与[NO_(2)^(-)]呈线性关系,相应的检测限(LOD)为~0.47μmol/L(3σ/k)。进一步分析表明,P1对NO_(2)^(-)的检测具有特定的选择性和优异的抗干扰性。With benzidine as the starting material,a compound(M1)containing two functional isocyanide groups was successfully prepared via Hofmann method,and a polyisocyanide derivative(P1),which with a crosslinked structure was successfully prepared via Ni^(2+)-catalyzed po-lymerization.Electrochemical detection of nitrite(NO_(2)^(-))was achieved by utilizing P1-modified glassy carbon electrode(GCE)as the working electrode.Differential pulse voltammetry(DPV)current signals displayed linear relationship to[NO_(2)^(-)]within the concentration of 0.5 to 200μmol/L,and the corresponding detection limit reached~0.47μmol/L(3σ/k).Further analysis proves that P1 has specific selectivity and excellent anti-interference for the detection of NO_(2)^(-).

关 键 词：聚异腈 交联聚合物 亚硝酸根 电化学传感 

分 类 号：O625.6[理学—有机化学]