A squaraine-based near IR fluorescent chemosensor for calcium.

Akkaya E. U. , Turkyilmaz S.

TETRAHEDRON LETTERS, vol.38, no.25, pp.4513-4516, 1997 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 25
  • Publication Date: 1997
  • Doi Number: 10.1016/s0040-4039(97)00917-9
  • Title of Journal : TETRAHEDRON LETTERS
  • Page Numbers: pp.4513-4516


A red to NIR emitting, highly Ca2+-specific fluorescent chemosensor has been synthesized. In pH 7.2 aqueous buffers, the chemosensor signals Ca2+ by a decrease in emission intensity, whereas large excess of Mg2+ ions have no effect on either the absorption or the emission spectrum. The chemosensor is likely to be the prototype of a new generation of laser-diode excitable fluorescent chemosensors for Calcium. (C) 1997 Elsevier Science Ltd.