Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 178, Issue -, Pages 160-165Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2017.01.064
Keywords
Pyrene-dipicolylamine; Chemosensor; Cu (II), Fe (III); Colorimetric; Chromogenic receptor
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Funding
- Department of Science and Technology INSPIRE Faculty award/research grant [IFA-13 CH-94, DST/SERB/YSS/000241]
- DST-INSPIRE, Govt. of India
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A pyrene-based colorimetric chemosensor 1-(pyren-1-yl)-N,N-bis-(pyridine-2-ylmethyl)methanamine (1) was synthesised for selective detection of Cu (II) and Fe (III) over the other metal cations Ni2+, Mg2+, Cd2, Hg2+, Na+, K+, Ca2+, Co2+, Cr3+, Pb2+ and Zn2+. The significant changes in UV-vis absorption band of receptor 1 and the emergence of 660 nm band in presence of Cu2+ ion indicates the selective binding of Cu2+ ion as compared to other metal cations which could easily be identified from the naked eye strong colour change. Job plots suggest a 1:1 and 2:1 stoichiometric binding of Cu2+ and Fe3+, respectively, which was evidenced by ESI-MS analysis. Chemosensor 1 explores a cost-effective and selective colorimetric sensor for naked eye detection of trace amount of Cu2+ and Fe3+ ions in presence of other metal cations. (C) 2017 Elsevier B.V. All rights reserved.
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