[1]Institute of Endemic Disease of Jilin University, Changchun 130021, China; The Second Hospital Norman Bethune of Jilin University, Changchun 130041, China.
[2]Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China.
[3]Institute of Endemic Disease of Jilin University, Changchun 130021, China.
[4]The First Hospital Norman Bethune of Jilin University, Changchun 130021, China.
[5]The Second Hospital Norman Bethune of Jilin University, Changchun 130041, China.
[6]Institute of Endemic Disease of Jilin University, Changchun 130021, China. Electronic address: jingling85619287@163.com.
[7]Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China. Electronic address: Qma@jlu.edu.cn.
In this paper, 3-aminobenzeneboronic acid functionalized Mn(2+)-doped ZnTe/ZnSe quantum dots (APBA-dQDs) were prepared. The APBA functional groups had strong binding ability with F(-), resulting in the quenchment of dQDs photoluminescence (PL). Under the optimal condition, the fluorescence intensity of APBA-dQDs was related linearly to the concentration of F(-) in the range of 0.25-1.5µmol/L with a detection limit of 0.1µmol/L. The selectivity of fluorescence quenching of APBA-dQDs for F(-) was enhanced. Moreover, the proposed methodology for the sensing of F(-) at EM 560nm in MC3T3-E1 osteoblastic cells was demonstrated and got a satisfactory results. The results indicate that the APBA-dQDs are promising candidates for intracellular in MC3T3-E1 osteoblastic cells. To the best of our knowledge, it was the first report of F(-) sensing by using the quenched fluorescence of APBA-dQDs in non-cancerous cells.;
(8.0+极速模式)