Facile synthesis of sulfur quantum dots with red light emission: Implications for electrochemiluminescence analysis application

被引:0
|
作者
Shen, Lihua [1 ]
Tang, Jundan [1 ]
Li, Meng [1 ]
Yu, Chunxia [1 ]
Zhang, Meng [1 ]
Wang, Shan [2 ]
Li, Yuangang [1 ]
Liu, Zhifang [3 ]
机构
[1] Xian Univ Sci & Technol, Coll Chem & Chem Engn, Xian 710054, Peoples R China
[2] Xianyang Normal Univ, Sch Chem & Chem Engn, Xianyang 712000, Peoples R China
[3] Beijing Inst Technol, Sch Integrated Circuits & Elect, Beijing 100081, Peoples R China
基金
中国国家自然科学基金;
关键词
Sulfur quantum dots; Fluorescence; Red light emission; Electrochemiluminescence; LIQUID-CHROMATOGRAPHY; GRAPHENE; ELECTROCHEMISTRY; DERIVATIZATION; HYDROQUINONE; RESORCINOL;
D O I
10.1016/j.saa.2024.124878
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
Sulfur quantum dots (SQDs) have been reported as a potential candidate due to their low toxicity and high luminescent performance. Here, SQDs with red light fluorescence (FL) emission were synthesized by a one-step hydrothermal method using Na2CO3 as an etching agent, using sublimed sulfur powder as a sulfur source, and using bovine serum albumin (BSA) as a stabilizer. The choice of etching agent (NaOH or Na2CO3) realized the tuning of SQDs' FL emission with blue and red light. The synthesized SQDs showed good FL stability and high FL efficiency, with a quantum yield of 1.03 % in an aqueous solution at 575 nm. In addition, stable and efficient electrochemiluminescence (ECL) emission was achieved by employing SQDs as ECL emitters with K2S2O8 as the co-reactant. The resorcinol (RS) can enhance the ECL intensity of the SQDs-K2S2O8 system, and the ECL intensity had a good linear relationship with the concentration of RS in a range from 2.5 nM to 25 nM with a detection limit of 0.61 nM. This work provides an emerging red-light luminescent SQDs, which would open up a way for the development of new types of luminophor in FL or ECL analysis. It also provides convenience for bio-labeling of live cells, in vivo imaging and provide new materials for photoelectric devices.
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页数:10
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