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.

Oguz U., Akkaya E.

TETRAHEDRON LETTERS, cilt.38, ss.4509-4512, 1997 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 38 Konu: 25
  • Basım Tarihi: 1997
  • Doi Numarası: 10.1016/s0040-4039(97)00916-7
  • Sayfa Sayıları: ss.4509-4512


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.