Electrochemical Properties of Multilayered Coatings Implementing Thiacalix[4]arenes with Oligolactic Fragments and DNA

被引：5
|
作者：
Kuzin, Yu. I. [1 ]
Gorbatchuk, V. V. [1 ]
Rogov, A. M. [2 ]
Stoikov, I. I. [1 ]
Evtugyn, G. A. [1 ]
机构：
[1] Kazan Fed Univ, AM Butlerov Chem Inst, Analyt Chem Dept, Kremlevskaya St 18, Kazan 420008, Russia
[2] Kazan Fed Univ, Interdisciplinary Ctr Analyt Microscopy, Kazan, Russia
来源：
ELECTROANALYSIS | 2020年 / 32卷 / 04期
基金：
俄罗斯科学基金会;
关键词：
layer-by-layer assembling; polyelectrolyte complex; thiacalix[4]arene; electrochemical impedance spectroscopy; oligolactides; BIOSENSOR; GLUCOSE; AMPLIFICATION; CARBON; FILMS; ACID;
D O I：
10.1002/elan.201900499
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Layer-by-layer assembling of polyelectrolyte complexes on glassy carbon electrode utilizing derivatives of p-tert-butylthiacalix[4]arene modified with oligolactic acid in cone, partial cone and 1,3-alternate configurations has been performed and characterized by atomic force microscopy, electrochemical impedance spectroscopy and cyclic voltammetry. Structure, surface morphology and permeability of the coatings depended on the number and nature of individual layers. Configuration of macrocyclic core influenced the charge distribution and flexibility of polyelectrolytes and the electrochemical properties of the coatings. Partial substitution of oligolactic derivatives with the DNA molecules allowed distinguishing native, thermally and oxidatively damaged DNA by ferricyanide ion signals. The relationships between the coating structure and the content can be further used for development of electrochemical sensors devoted to the detection of specific DNA interactions.
引用
收藏
页码：715 / 723
页数：9
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