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Citation: RUAN Sheng-Li, ZHANG Ting-Ting, ZHANG Min, ZHANG Hong-Yang, WANG Yue-Rong, HU Ping. Fabrication of Bacitracin-Templated Gold Nanocluster and Its Application in Detection of Adenosine Triphosphate[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(12): 1997-2003. doi: 10.11895/j.issn.0253-3820.181602 shu

Fabrication of Bacitracin-Templated Gold Nanocluster and Its Application in Detection of Adenosine Triphosphate

1.
Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China;
2.
Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China

Received Date: 19 September 2018
Revised Date: 25 October 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 81573397).

A novel method for fabrication of gold nanocluster by using bacitracin as a reducing agent and stabilizer in aqueous solution was developed. The fluorescence of bacitracin-templated gold nanoclusters (AuNCs@Bacitracin) could be quenched in the presence of Fe³⁺. The property of fluorescence quenched by Fe³⁺ could be applied to preparation of a "turn-on" probe for detection of adenosine triphosphate (ATP). Under the optimized conditions, AuNCs were prepared by the reaction of bacitracin and HAuCl₄with the molar ratio of 1:1 at pH=1 for 2 h. 98% of original intensity of AuNC fluorescence was quenched in the presence of 5 mmol/L Fe³⁺. Besides, the value of lg(F/F₀) was linearly related with the concentration of ATP (R²=0.9902) in the range of 10 μmol/L-8 mmol/L. The fabricated probe was then applied to detection of the level of ATP in artificial serum with recovery of 103.0%-105.0% and RSD<1.0%, which suggested that the method was accurate and reliable.
- Gold nanocluster,
- Bacitracin,
- Adenosine triphosphate,
- Fluorescence
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