Issue 14, 2013
From the journal:

Journal of Materials Chemistry B

A highly selective ratiometric fluorescent chemosensor for Cu(ii) based on dansyl-functionalized thiol stabilized silver nanoparticles†

Vairaperumal Tharmaraja  and  Kasi Pitchumani*a  

* Corresponding authors

a School of Chemistry, Madurai Kamaraj University, Madurai-625021, Tamil Nadu, India
E-mail: pit12399@yahoo.com
Fax: +91 452 2459181
Tel: +91 0452-2456614

Abstract

A fluorescent chemosensor for Cu2+ ions based on dansyl-functionalized thiol stabilized silver nanoparticles containing 2-aminothiophenyl units as the Cu2+ binding sites is developed. A decrease in fluorescence at 497 nm and an increase in fluorescence at 410 nm with an isoemissive point at 445 nm upon the addition of Cu2+ ions is attributed to the formation of a Cu2+ complex in aqueous acetonitrile based on an energy transfer mechanism. This sensor has excellent sensitivity and selectivity over other metal ions and has a detection limit as low as 5.0 × 10−10 mol L−1.

Graphical abstract: A highly selective ratiometric fluorescent chemosensor for Cu(ii) based on dansyl-functionalized thiol stabilized silver nanoparticles

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Article information

DOI
https://doi.org/10.1039/C3TB00534H
Article type
Paper
Submitted
15 Dec 2012
Accepted
31 Jan 2013
First published
01 Feb 2013

J. Mater. Chem. B, 2013,1, 1962-1967

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A highly selective ratiometric fluorescent chemosensor for Cu(II) based on dansyl-functionalized thiol stabilized silver nanoparticles

V. Tharmaraj and K. Pitchumani, J. Mater. Chem. B, 2013, 1, 1962 DOI: 10.1039/C3TB00534H

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