![Quantitative SERS Detection of Uric Acid via Formation of Precise Plasmonic Nanojunctions within Aggregates of Gold Nanoparticles and Cucurbit[n]uril](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F61682.jpg&w=3840&q=50)
One-step hydrothermal synthesis of silver-doped carbon quantum dots for highly selective detection of uric acid
Shu Juan Zhuo1,2, Jing Fang1, Jing Wang1
1Anhui Laboratory of Molecule-Based Materials; Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Key Laboratory of Chemo-Biosensing, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People's Republic of China.
Abstract:
In this paper, a simple and convenient fluorescence method for detection of uric acid (UA) based on Ag-doped carbon quantum dots (Ag-CQDs) is developed. The Ag-CQDs contain Ag species could bond with UA, which promoted the electron and/or energy transfer and produced high quenching extent. Thus, the fluorescence intensity of Ag-CQDs decreased in the presence of UA. Under the optimal condition, the UA sensor exhibited a linear response in the range of 0.005-100 μM with a detection limit of 0.35 nM (S/N = 3). Ag-CQDs demonstrated high sensitivity and rapid response to UA over a wide range of concentration indicating their great potential as a fluorescent probe for chemical sensing. Moreover, this method has successfully applied to detect UA in human urine samples.
