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A multi-receptor fluorescence signaling system exhibiting enhancement selectively in presence of Na(I) and Tl(I) ions

Paper ID Volume ID Publish Year Pages File Format Full-Text
28907 44104 2007 8 PDF Available
Title
A multi-receptor fluorescence signaling system exhibiting enhancement selectively in presence of Na(I) and Tl(I) ions
Abstract

A PET fluorescence signaling system L1 has been synthesized in the ‘Receptor1-Spacer-Fluorophore-Spacer-Receptor2’ format through attachment of a laterally non-symmetric heteroditopic cryptand and a 4,7,10,13-tetraoxa-1-azacyclopentadecane macrocycle at the 9- and 10-positions of anthracene. The cryptand receptor is derivatized with two 2,4-dinitrobenzene groups to impart structural rigidity. This system exhibits selective fluorescence enhancement in presence of Na(I) and Tl(I) ions simultaneously and mimics the AND logic function. The cryptand receptor also binds a Cu(II) ion outside the cavity and allows L1 to perform as an INHIBIT chemical logic in presence of H+ and Cu(II) ions.

Keywords
Fluorescence enhancement; Metal ion specificity; Cryptand; Macrocycle; Logic functions
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A multi-receptor fluorescence signaling system exhibiting enhancement selectively in presence of Na(I) and Tl(I) ions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 185, Issues 2–3, 25 January 2007, Pages 231–238
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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