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Citation: FAN Xue-Mei, WANG Shu-Min, LI Zhe-Jian, JIA Xue-Yan, ZHENG Xing-Wang. Determination of Adenosine Based on Ru(bpy)₃²⁺/AuNPs/SWCNTs/Adenosine Aptamer Electrochemiluminescence Sensor[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(9): 1353-1359. doi: 10.11895/j.issn.0253-3820.170216 shu

Determination of Adenosine Based on Ru(bpy)₃²⁺/AuNPs/SWCNTs/Adenosine Aptamer Electrochemiluminescence Sensor

1.
College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, China;2 School of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China;3 School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China

Received Date: 5 April 2017
Revised Date: 14 June 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 30970696).

Based on the AuNPs/Nafion composite membrane technology and immobilization of amino adenosine aptamer using carboxyl carbon nanotubes on the surface of a glassy carbon electrode, a electrochemiluminescence sensor was preparated. The sensor was characterized by cyclic voltammetry and electrochemical luminescence. The result showed that the sensor had a good stability and reproducibility. Adenosine and adenosine aptamer could form G-tetrahedral structure, leading a decrease of ECL intensity. Under the optimum experimental conditions, the relative ECL intensity showed a good linear relationship to the negative logarithm of adenosine concentration in the range of 1.0×10^-11-1.0×10^-7 mol/L, the linear equations was ΔI_ECL=-890lgC-5050 with a detection limit of 5.0×10^-12 mol/L. The RSD was 2.7% in 11 times measurement of adenosine (1.0×10^-10 mol/L). The recovery was 97.1%-110.0% in the determination of real adenosine sample.
- Electrogenerated chemiluminescence,
- Adenosine aptamer,
- Adenosine
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Determination of Adenosine Based on Ru(bpy)₃²⁺/AuNPs/SWCNTs/Adenosine Aptamer Electrochemiluminescence Sensor