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ZnS:Mn Nanoparticles Functionalized by PAMAM-OH Dendrimer Based Fluorescence Ratiometric Probe for Cadmium

ZnS:Mn Nanoparticles Functionalized by PAMAM-OH Dendrimer Based Fluorescence Ratiometric Probe for Cadmium

Bruno B Campos, Manuel Algarra, Ksenija Radotić, Dragosav Mutavdžić, Enrique Rodríguez-Castellón, José Jiménez-Jiménez, Beatriz Alonso, Carmen M Casado, Joaquim C G Esteves da Silva

Talanta. 2015 Mar;134:317-324.

PMID: 25618674

Abstract:

We report a nanocomposite of ZnS:Mn quantum dots and a third generation PAMAM-OH dendrimer (ZnS:Mn@PAMAM-OH(G=3)) which was rationalized to be used as ratiometric nanosensor for Cd(2+) 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 Cd(2+) in aqueous solution with a limit of detection of 24.34 μM and RSD 4.07%, obtained by using the ratio I448/I595. The method was applied to different water samples.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS76296	PAMAM-OH dendrimer, generation 2 solution			Price
LS76297	PAMAM-OH dendrimer, generation 3 solution			Price

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