Issue 42, 2010
From the journal:

Dalton Transactions

Switching and fluorescence signal amplification with metal ions in allosteric systems based on 1, 3-alternatethiacalix[4]crown†

Manoj Kumar,*a   Abhimanew Dhira  and  Vandana Bhallaa  

* Corresponding authors

a Department of Chemistry Guru Nanak Dev University, UGC Sponsored Centre for Advanced Studies-1, Amritsar, India
E-mail: mksharmaa@ yahoo.co.in
Fax: +91 (0)183 2258820
Tel: +91 (0)183 2258802 9 ext. 3205

Abstract

New thiacalix[4]crown derivatives 4 and 5 of 1,3-alternate conformation possessing anthracene and quinoline moieties respectively were synthesised and examined for their cation recognition abilities toward different cations by fluorescence spectroscopy. Selective optical recognition with fluorescence amplification was observed for Fe3+/K+ and Hg2+/K+ in chemosensors 4 and 5 respectively. Further it was observed that the formation of 4·Fe3+ complex triggers the decomplexation of K+ ion. Similar allosteric behaviour between Hg2+ and K+ was observed in chemosensor 5.

Graphical abstract: Switching and fluorescence signal amplification with metal ions in allosteric systems based on 1, 3-alternate thiacalix[4]crown

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Article information

DOI
https://doi.org/10.1039/C0DT00702A
Article type
Paper
Submitted
22 Jun 2010
Accepted
23 Aug 2010
First published
14 Oct 2010

Dalton Trans., 2010,39, 10122-10127

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Switching and fluorescence signal amplification with metal ions in allosteric systems based on 1, 3-alternate thiacalix[4]crown

M. Kumar, A. Dhir and V. Bhalla, Dalton Trans., 2010, 39, 10122 DOI: 10.1039/C0DT00702A

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