Cu2+-driven selective colorimetric sensing of iodide ions and AND logic gate using citrate-capped AgNPs

Shilpa Bothra; Rajender Kumar; Anil Kuwar; Narinder Singh; Suban K. Sahoo

doi:10.1016/j.matlet.2015.01.072

Cu²⁺-driven selective colorimetric sensing of iodide ions and AND logic gate using citrate-capped AgNPs

Shilpa Bothra, Rajender Kumar, Anil Kuwar, Narinder Singh, Suban K. Sahoo

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

A highly selective and sensitive colorimetric nanosensor driven by Cu²⁺ ion for iodide (I^-) ion was developed using citrate-capped AgNPs. This assay relied upon the distance-dependent optical properties of AgNPs where Cu²⁺ was employed as interlinking agent. In the simultaneous presence of I^- and Cu²⁺, the system showed a color change from yellow to colorless that could be monitored using naked-eyes and UV-vis spectrophotometer. The nanosensor exhibited good iodide sensitivity with a detection limit of 0.24 μM. Further, the nanosystem was developed as an AND type logic gate with the inputs of Cu²⁺ and I^-.

Original language	English
Pages (from-to)	34-36
Number of pages	3
Journal	Materials Letters
Volume	145
DOIs	https://doi.org/10.1016/j.matlet.2015.01.072
State	Published - 15 Apr 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V.

Funding

This work was made possible by a grant from the DST, New Delhi ( SR/S1/IC-54/2012 ). We would also like to thank SAIF, Indian Institute of technology (IIT), Bombay for providing TEM facility.

Funders	Funder number
Department of Science and Technology, Ministry of Science and Technology, India	SR/S1/IC-54/2012

Keywords

AND
Colorimetric
Iodide
Nanoparticles
Sensors
logic gate

Access to Document

10.1016/j.matlet.2015.01.072

Cite this

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