Luminescent sensor for copper(II) ion based on imine functionalized monometallic rhenium(I) complexes

Ramdass, Arumugam and Sathish, Veerasamy and Velayudham, Murugesan and Thanasekaran, Pounraj and Umapathy, Siva and Rajagopal, Seenivasan (2017) Luminescent sensor for copper(II) ion based on imine functionalized monometallic rhenium(I) complexes. In: SENSORS AND ACTUATORS B-CHEMICAL, 240 . pp. 1216-1225.

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Abstract

Novel imine functionalized monometallic rhenium(I) polypyridine complexes (1-4) comprising phenol moiety with 2,2'-bipyridine ligands L1-L4 have been synthesized and characterized by various spectroscopic techniques. These complexes function as selective and sensitive sensor towards the copper(II) ion demonstrated by UV-vis absorption, luminescence and time-resolved spectroscopic techniques. An enormous enhancement is observed in emission intensity, quantum yield and luminescence lifetime with the addition of copper(II) ion due to the restriction of C=N isomerization in the Re(I) complexes. The strong binding between copper(II) ion and these complexes can be inferred from the binding constant values, which are in the range of 1.1 x 10(4)-2.4 x 10(4) M-1. Furthermore, the structural and the absorption features of the complexes have been supported by density functional theory (DFT) and time-dependent DFT (TDDFT) calculations. (C) 2016 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	SENSORS AND ACTUATORS B-CHEMICAL
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	31 Jan 2017 05:34
Last Modified:	31 Jan 2017 05:34
URI:	http://eprints.iisc.ac.in/id/eprint/56174

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