基于巯基芘-石墨烯复合材料的非酶葡萄糖传感器  

A non-enzymatic glucose sensor based on PyMT-RGO composites

作　　者：冯春梁[1] 王永斌[1] 孙越[1] 周明皓[1] 张娜[1] 

机构地区：[1]辽宁师范大学化学化工学院功能材料化学研究所,辽宁大连116029

出　　处：《辽宁师范大学学报（自然科学版）》2016年第2期211-216,共6页Journal of Liaoning Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(21304041)

摘　　要：利用氯磺酸法,以芘为原料制备巯基芘（PyMT）,通过平面分子大π键间的共轭作用与石墨烯（RGO）形成复合材料（PyMT-RGO）,进而通过PyMT的巯基将复合材料自组装到金电极上,制得PyMT-RGO/Au修饰电极,实现石墨烯以直立形态固定在电极表面.并利用恒电位电沉积法在RGO表面沉积纳米金（AuNPs）得到非酶葡萄糖传感器（AuNPs/PyMT-RGO/Au）.利用AuNPs/PyMT-RGO/Au对葡萄糖进行检测,线性范围为1~100mmol/L,相关系数为0.991,检出限为0.57mmol/L.此传感器的在检测电位下对AA、UA具有理想的抗干扰能力,且有较好的一致性和重现性,在实际应用中具有潜在价值.1-mercapto pyrene was synthesised by a chlorosulfonic acid method. Then, PyMT-RGO composites were prepared by the π-π conjugation effect between PyMT and RGO. And the compos- ites were easily assembled on gold electrode due to the sulfydryl of PyMT. Therefore, RGO could stand on the surface of electrode after assembling. The non enzymatic glucose sensor was prepared by electro-depo＇siting AuNPs on the surface of PyMT-RGO/Au. Finally, chronoamperometry was ap- plied to detect glucose. The experimental results showed that linear range of the sensor was 1 mmol/L to 100 mmol/L,correlation coefficient was 0. 991 and limit of detection was 0.57 mmol/L. The sensor could resist the interference from AA, UA. And it had great reproducibility and stability. As a result,the sensor has comparatively higher practical value.

关 键 词：巯基芘 石墨烯 纳米金 葡萄糖 非酶传感器 

分 类 号：O657.1[理学—分析化学]