基于铁氰化铜的非标记型核酸适配体传感器的构建及其对腺苷的检测

被引:3
作者
杨绍明
李红
孙清
李瑞琴
尚培玲
郑龙珍
陈爱喜
机构
[1] 华东交通大学基础学院化学化工系
关键词
铁氰化铜; 纳米金; 核酸适配体传感器; 腺苷;
D O I
暂无
中图分类号
O657.1 [电化学分析法]; TP212 [发送器(变换器)、传感器];
学科分类号
070302 ; 081704 ; 080202 ;
摘要
采用电化学沉积法在金电极表面制备了铁氰化铜(CuHCF)氧化还原电化学探针,通过CN-(CuHCF)和金纳米粒子(GNPs)之间形成Au-CN键的强相互作用力,将GNPs组装到电极表面后,再通过Au-S键将巯基化的腺苷适配体组装到电极表面,构建了高灵敏检测腺苷的非标记型核酸适配体传感器。利用电化学阻抗对传感器的组装构建过程进行监测。用循环伏安法和差分脉冲法考察了该传感器的电化学行为,并探讨了支持电解质和扫速对传感器的影响。在最优实验条件下,该传感器对腺苷在100 fg/mL50.0 ng/mL范围内呈良好的线性响应,相关系数为0.998,检出限为45.0 fg/mL。
引用
收藏
页码:1296 / 1301
页数:6
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