TY - JOUR

T1 - Non-enzymatic sensors based on in situ laser-induced synthesis of copper gold and gold nano-sized microstructures

AU - Panov, Maxim S.

AU - Vereshchagina, Olga A.

AU - Ermakov, Sergey S.

AU - Tumkin, Ilya I.

AU - Khairullina, Evgeniia M.

AU - Skripkin, Mikhail Yu.

AU - Mereshchenko, Andrey S.

AU - Ryazantsev, Mikhail N.

AU - Kochemirovsky, Vladimir A.

PY - 2017/5/15

Y1 - 2017/5/15

N2 - The synthesis of conductive gold and copper-gold microstructures with high developed surface based on the method of laser-induced metal deposition from solution was developed. The topology and crystallization phase of these structures were observed by means of scanning electron microscopy and X-ray diffraction, respectively. The electrochemical properties of the synthesized materials were investigated using cyclic voltamperometry and amperometry. According to the obtained results, it was found out that copper-gold microstructures demonstrate a linear dependence of Faraday current vs. concentration from 0.025 to 5 mu M for n-glucose and from 0.025 to 10 mu M for hydrogen peroxide. In turn, gold deposit exhibits a linear dependence of Faraday current vs. concentration from 0.025 to 50 mu M for n-glucose and from 0.025 to 1 mu M for hydrogen peroxide. Moreover, the synthesized materials reveal low detection limits (0.025 mu M) with respect to the aforementioned analytes, which is quite promising for their potential application in design and fabrication of new non-enzymatic biosensors.

AB - The synthesis of conductive gold and copper-gold microstructures with high developed surface based on the method of laser-induced metal deposition from solution was developed. The topology and crystallization phase of these structures were observed by means of scanning electron microscopy and X-ray diffraction, respectively. The electrochemical properties of the synthesized materials were investigated using cyclic voltamperometry and amperometry. According to the obtained results, it was found out that copper-gold microstructures demonstrate a linear dependence of Faraday current vs. concentration from 0.025 to 5 mu M for n-glucose and from 0.025 to 10 mu M for hydrogen peroxide. In turn, gold deposit exhibits a linear dependence of Faraday current vs. concentration from 0.025 to 50 mu M for n-glucose and from 0.025 to 1 mu M for hydrogen peroxide. Moreover, the synthesized materials reveal low detection limits (0.025 mu M) with respect to the aforementioned analytes, which is quite promising for their potential application in design and fabrication of new non-enzymatic biosensors.

U2 - 10.1016/j.talanta.2017.01.089

DO - 10.1016/j.talanta.2017.01.089

M3 - статья

VL - 167

SP - 201

EP - 207

JO - Talanta

JF - Talanta

SN - 0039-9140

ER -