Naked eye instant reversible sensing of Cu2+ and its in situ imaging in live brine shrimp Artemia

Ratish R. Nair; M. Raju; Neha P. Patel; Ishan H. Raval; E. Suresh; Soumya Haldar; Pabitra B. Chatterjee

doi:10.1039/C5AN00957J

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Naked eye instant reversible sensing of Cu²⁺ and its in situ imaging in live brine shrimp Artemia†

Ratish R. Nair,^a M. Raju,^a Neha P. Patel,^b Ishan H. Raval,^b E. Suresh,^ac Soumya Haldar*^bc and Pabitra B. Chatterjee*^ac

Author affiliations

* Corresponding authors

^a Analytical Discipline and Centralized Instrumental Facility, CSIR-CSMCRI, G. B. Marg, Bhavnagar 364002, India
E-mail: pbchatterjee@csmcri.org

^b Marine Biotechnology and Ecology Discipline, CSIR-CSMCRI, G. B. Marg, Bhavnagar 364002, India
E-mail: shaldar@csmcri.org

^c Academy of Scientific and Innovative Research, CSIR-CSMCRI, G. B. Marg, Bhavnagar 364002, India

Abstract

A Cu²⁺-specific colorimetric reversible fluorescent receptor HL was designed and synthesized which showed a naked eye observable colour change from colourless to pink on addition of an aqueous buffer (pH 7.4) solution of 30 ppb Cu²⁺. Short response time (≤5 s) and low detection limit (nearly 3 ppb) make HL suitable as a reliable “dip-in” open eye sensor for Cu²⁺. Bio-imaging application in live brine shrimp Artemia enabled HL to detect Cu²⁺ at as low as 10 ppb exposure.

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Article information

DOI: https://doi.org/10.1039/C5AN00957J
Article type: Communication
Submitted: 13 May 2015
Accepted: 20 Jun 2015
First published: 22 Jun 2015

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Analyst, 2015,140, 5464-5468

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Naked eye instant reversible sensing of Cu²⁺ and its in situ imaging in live brine shrimp Artemia

R. R. Nair, M. Raju, N. P. Patel, I. H. Raval, E. Suresh, S. Haldar and P. B. Chatterjee, Analyst, 2015, 140, 5464 DOI: 10.1039/C5AN00957J

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