摘要
利用分子印迹技术,结合聚苯胺、多壁碳纳米管和金纳米粒子-丝素蛋白复合物构建新型检测多巴胺的分子印迹电化学传感器。分子印迹聚合物以多巴胺为模板,正硅酸乙酯和苯基三乙氧基硅烷为功能单体合成。当pH值为7.0,模板与单体的物质的量比为1∶5时,该传感器的线性范围为5.0×10-8~9×10-6mol/L,检测限(LOD)为1.02×10-8mol/L。重复实验的相对标准偏差为5.4%。
A novel sensitive molecularly imprinted electrochemical sensor has been developed for se!ective detection of dopamine by combination of polyaniline, muhiwalled carbon nanotube and gold nanoparticle-silk fibroin composite. The molecularly imprinted pol- ymer (MIP) was synthesized using dopamine as the template molecule ,tetraethyl orthosilieate and triethoxyphenylsilane as the function- al monomers. Under pH = 7.0 and the template-monomer ratio of 1 : 5, the current response had a linear relationship with the concentra- tion of dopamine in the range of 5.0-10 -s mol/L-9 x 10 -6 mol/L,with a limit of detection 1.02-10 -s mol/L. The relative standard deviation (RSD) of the repeated experiments was 5.4%.
出处
《济南大学学报(自然科学版)》
CAS
北大核心
2012年第3期255-259,共5页
Journal of University of Jinan(Science and Technology)
基金
国家自然科学基金(31101296)
山东省自然基金(ZR2010DQ025)
山东省高等学校科技计划(J10LB14)
济南大学博士基金(XBS1034)
关键词
电化学传感器
分子印迹聚合物
聚苯胺
多壁碳纳米管
金纳米粒子-丝素蛋白复合物
多巴胺检测
electrochemical sensor
molecularly imprinted polymer
polyaniline
muhiwalled carbon nanotube
gold nanoparticle-silk fibroin composite
dopamine detection