Electrochemical Biosensor Based on Nanosized Polymer-Enzyme Films Composed of Linear Poly(N,N-Dimethylaminoethyl Methacrylate) and Choline Oxidase

被引：3
作者：
Sigolaeva, L., V [1 ]
Konyakhina, A. Yu [1 ]
Pergushov, D., V [1 ]
Kurochkin, I. N. [1 ,2 ]
机构：
[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
[2] Russian Acad Sci, Emanuel Inst Biochem Phys, Moscow 119334, Russia
来源：
MOSCOW UNIVERSITY CHEMISTRY BULLETIN | 2021年 / 76卷 / 05期
关键词：
stimuli-sensitivity; thermoresponsive polymer; polyelectrolyte; surface modification; adsorption; thin films; biosensor; poly(N; N-dimethylaminoethyl methacrylate); choline oxidase; electrochemistry; atomic force microscopy; WEAK POLYELECTROLYTES; TEMPERATURE; ADSORPTION; TRANSFECTION; DOXORUBICIN; MICROGELS; BEHAVIOR; RELEASE; DESIGN; PH;
D O I：
10.3103/S0027131421050060
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Nanosized polymer-enzyme films were fabricated on graphite surfaces via a sequential two-stage adsorption of the pH- and thermoresponsive polymer, viz., linear poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA), and the enzyme, viz., choline oxidase (ChO). The influence of the conditions (pH and temperature), which are applied for deposition of the polymer onto graphite surface, on electrochemical responses of the polymer-enzyme sensor constructs and kinetic parameters of enzymatic oxidation of choline by ChO integrated into the polymer-enzyme films was revealed. Stimuli-sensitivity of PDMAEMA was found to control the properties of the formed polymer coatings (surface coverage, film thickness and roughness), which decisively determine the amount of the ChO bound by the polymer film and, consequently, the resultant electrochemical characteristics of the polymer-enzyme sensor constructs.
引用
收藏
页码：334 / 342
页数：9
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