含多芳香环嵌段聚合物PS-b-PAH对碳纳米管的修饰

以芘丁酸为原料通过酯化反应制备了含芘丁单元的苯乙烯基单体,再利用原子转移自由基聚合法(ATRP)合成了分子量可控的嵌段聚合物PS-b-PAH,采用凝胶渗透色谱(GPC)、核磁共振(1H-NMR)等测试手段对产物进行了表征。采用聚合物对碳纳米管表面修饰,比较了聚苯乙烯PS和嵌段聚合物PS-b-PAH修饰碳纳米管后在THF溶剂中的分散情况。结果表明,PS和嵌段聚合物修饰碳纳米管可提高碳管在THF的分散性,PS和嵌段聚合物PS-b-PAH修饰后碳管在THF中的溶解性分别为0.28 g/L,0.332 g/L。

Electrocatalytic behaviors of poly acridine orange/multi-walled carbon nanotube modified electrode

In this work, noncovalent functionalization of multiwalled carbon nanotube （MWNT） with acridine orange （AO） by electropolymerization is studied. The obtained composite film is a viable alternate electrode material, non-toxic, chemical inert, not volatile, using to construct modified electrode. The new type modified electrode has both of unique properties of MWNT and poly acridine orange （POAO）, can provide good sensitivity, low limits of detection, good response precision, and superb response stability.