An amide based dipodal Zn2+ complex: nano-molar detection of HSO4− in a semi-aqueous system

Umesh Fegade; Hemant Sharma; Kundan Tayade; Sanjay Attarde; Narinder Singh; Anil Kuwar

doi:10.1039/C3OB41291A

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An amide based dipodal Zn²⁺ complex: nano-molar detection of HSO₄⁻ in a semi-aqueous system†

Umesh Fegade,^ac Hemant Sharma,^b Kundan Tayade,^ac Sanjay Attarde,^c Narinder Singh*^b and Anil Kuwar*^a

Author affiliations

* Corresponding authors

^a School of Chemical Sciences, North Maharashtra University, Jalgaon, MS, India
E-mail: kuwaras@gmail.com

^b Department of Chemistry, Indian Institute of Technology, Ropar, Rupanagar, Punjab, India
E-mail: nsingh@iitrpr.ac.in

^c School of Environmental and Earth Sciences, North Maharashtra University, Jalgaon, MS, India

Abstract

A new chromogenic dipodal Zn²⁺ complex (4) bearing an amide group has been synthesized. The anion binding profile of this sensor was investigated with fluorescence and UV-Vis spectroscopy. The receptor 4 has high affinity for HSO₄⁻ with a binding constant of 3.5 × 10⁴ M⁻¹ and a detection limit of 50 nM. The binding ability was confirmed with spectroscopic methods and density functional theory calculation (DFT).

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Article information

DOI: https://doi.org/10.1039/C3OB41291A
Article type: Paper
Submitted: 22 Jun 2013
Accepted: 10 Aug 2013
First published: 03 Sep 2013

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Org. Biomol. Chem., 2013,11, 6824-6828

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An amide based dipodal Zn²⁺ complex: nano-molar detection of HSO₄⁻ in a semi-aqueous system

U. Fegade, H. Sharma, K. Tayade, S. Attarde, N. Singh and A. Kuwar, Org. Biomol. Chem., 2013, 11, 6824 DOI: 10.1039/C3OB41291A

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Organic & Biomolecular Chemistry