A Mn:ZnSe quantum dot-based turn-on fluorescent sensor for the highly selective and sensitive detection of Cd2+. Issue 4 (8th January 2020)

• Record Type: Journal Article
• Authors: Zhou, Zhi-Qiang; Yang, Li-Yun; Liao, Yuan-Ping; Wu, Hui-Yan; Zhou, Xiao-Hui; Huang, Shan; Liu, Yi; Xiao, Qi
• Is Part Of: Analytical methods. Volume 12:Issue 4(2020)
• Page Start: 552
• Page End: 556
• Publication Date: 2020-01-08
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/c9ay02445j
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : A highly selective and sensitive nanoprobe with fluorescence turn-on sensing properties for recognizing Cd 2+ was developed through replacing Mn 2+ near the surface of Mn:ZnSe quantum dots. Abstract : A highly selective and sensitive nanoprobe with fluorescence turn-on sensing properties for recognizing Cd 2+ was developed through replacing Mn 2+ near the surface of Mn:ZnSe quantum dots (QDs). The similar ionic radii of Cd 2+ and Zn 2+ make the replacement of superficial Zn 2+ by Cd 2+ possible, followed by the replacement of external Mn 2+ by Cd 2+ . Thus, this fluorescence turn-on strategy possesses great selectivity for the determination of Cd 2+ . Based on this strategy, the limit of detection (LOD) for Cd 2+ is 18 nM, which is superior to the LOD of most reported fluorescent nanomaterial-based probes.