Ortho-phenylenediamine-based open and macrocyclic receptors in selective sensing of H2PO4−, ATP and ADP under different conditions

Kumaresh Ghosh; Indrajit Saha

doi:10.1039/C2OB26995C

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Organic & Biomolecular Chemistry

Issue 47, 2012

The international home of synthetic, physical and biomolecular organic chemistry.

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Paper

Ortho-phenylenediamine-based open and macrocyclic receptors in selective sensing of H₂PO₄⁻, ATP and ADP under different conditions

Kumaresh Ghosh*^a and Indrajit Saha^a

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Department of Chemistry, University of Kalyani, Kalyani-741235, India
E-mail: ghosh_k2003@yahoo.co.in ;
Fax: +913325828282 ;
Tel: +913325828750

Org. Biomol. Chem., 2012,10, 9383-9392

DOI: 10.1039/C2OB26995C
Received 19 Jun 2012, Accepted 15 Oct 2012
First published online 18 Oct 2012

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Abstract
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Ortho-phenylenediamine-based open and macrocyclic receptors have been designed and synthesized. The open receptor 1 and the macrocyclic receptor 2 fluorimetrically distinguish H₂PO₄⁻ from the other anions examined in CH₃CN with appreciable binding constant values. As practical applications, they are also sensible to nucleotides in aq. CH₃CN (1:1, v/v). The receptor 1 shows significant emission change upon complexation of ATP and ADP. ADP is selectively distinguished by a ratiometric change in emission. In contrast, the macrocyclic receptor 2, under similar conditions, shows good binding with ATP over the others.