ZnS:Mn nanoparticles functionalized by PAMAM-OH dendrimer based fluorescence ratiometric probe for cadmium

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Bruno B Campos (Author) Other; Manuel Algarra (Author) Other; Ksenija Radotic (Author) Other; Dragosav Mutavdzic (Author) Other; Enrique Rodriguez Castellon (Author) Other; Jose Jimenez Jimenez (Author) Other; Beatriz Alonso (Author) Other; Carmen M Casado (Author) Other; Joaquim C G Esteves da Silva (Author) FCUP

Journal

Title: Talanta

Vol. 134

Pages: 317-324

ISSN: 0039-9140

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 10 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-00A-20B

DOI: 10.1016/j.talanta.2014.10.010

Abstract (EN): We report a nanocomposite of ZnS:Mn quantum dots and a third generation PAMAM-OH dendrimer (ZnS:Mn@PAMAM-OHG=3) which was rationalized to be used as ratiometric nanosensor for Cd2+ in aqueous solution. The nanoparticles exhibited a bright yellow-orange emission with peaks at 448 and 595 nm. The structure of ZnS:Mn was not changed after coupling with PAMAM-OH, which was evidenced by the analysis of the emission spectra of the compounds. The results confirm that the prepared fluorescence nanoparticles could selectively detect Cd2+ in aqueous solution with a limit of detection of 24.34 mu M and RSD 4.07%, obtained by using the ratio I-448/I-595. The method was applied to different water samples.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8