化学
硼酸
葡萄糖氧化酶
安培法
纳米纤维
生物传感器
循环伏安法
磺酸
核化学
固定化酶
傅里叶变换红外光谱
高分子化学
苯硼酸
电极
化学工程
有机化学
生物化学
电化学
酶
物理化学
催化作用
工程类
作者
Ashutosh Tiwari,Dohiko Terada,Chiaki Yoshikawa,Haruo Kobayashi
出处
期刊:Talanta
[Elsevier]
日期:2010-10-01
卷期号:82 (5): 1725-1732
被引量:44
标识
DOI:10.1016/j.talanta.2010.07.078
摘要
A highly selective enzyme-free amperometric glucose sensor based on electrostatic self-assembling of 3-aminobenzene boronic acid (ABBA) onto a poly(styrene-co-acrylamide)/polystyrene sulfonic acid (PSA/PSSA) electrospun nanofibers-mat was investigated. Emerging ability of phenylboronic acid to bind with the diols of sugars has been extended for rapid response of glucose with a pH-sensitive redox mediator, hematein natural dye. ABBA was adsorbed on the PSA/PSSA nanofibers-mat/Pt-disc electrode that resulted in an ABBA/PSA/PSSA glucose active electrode. The interaction of ABBA onto the PSA/PSSA nanofibers-mat/Pt-disc electrode was characterized with Fourier transform infrared spectroscopy (FT-IR), ζ-potential, scanning electron microscopy (SEM), contact angle and cyclic voltammetry (CV) measurements. The prepared enzyme-free sensor exhibited a fast amperometric response, i.e., about 4s and linearity ranging from 0.75 to 14mM to glucose with a sensitivity of 0.987μAmM(-1)cm(-2). Compared to other types of glucose biosensors viz. use glucose oxidase as sensing elements, present glucose sensor offers basic advantages including ease of fabrication, high affinity-selectivity to the glucose upon the electrode surface and quick response.
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