One-pot synthesis of a red-fluorescent chemosensor from an azacrown, phloroglucinol and squaric acid: A simple in-solution construction of a functional molecular device.

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Oguz U., Akkaya E.

TETRAHEDRON LETTERS, vol.38, no.25, pp.4509-4512, 1997 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 38 Issue: 25
• Publication Date: 1997
• Doi Number: 10.1016/s0040-4039(97)00916-7
• Journal Name: TETRAHEDRON LETTERS
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Page Numbers: pp.4509-4512
• Middle East Technical University Affiliated: No

Abstract

A long wavelength fluorescent, squaraine-based chemosensor has been synthesized in one step from commercially available precursors. The resulting squaraine derivative absorbs maximally at 635 nm (epsilon = 260,000) and the emission peak is at 665 nm. This azacrown-appended squaraine signals alkaline and earth-alkaline metal ions in millimolar concentrations in acetonitrile. (C) 1997 Elsevier Science Ltd.