A 3-hydroxychromone with dramatically improved fluorescence properties

Klymchenko A., Ozturk T. , PIVOVARENKO V., DEMCHENKO A.

TETRAHEDRON LETTERS, cilt.42, sa.45, ss.7967-7970, 2001 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 42 Konu: 45
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1016/s0040-4039(01)01723-3
  • Sayfa Sayıları: ss.7967-7970


A new 3-hydroxychromone derivative, 2-(6-diethylaminobenzo[b]furan-2-yl)-3-hydroxychromone. has been synthesized by a concise route. Possessing dual emission common for 3-hydroxyflavones, it exhibits strong red shifts of both absorption and fluorescence spectra, which makes it the longest wavelength fluorescent dye among all known chromones. It also demonstrates a significant increase in fluorescence quantum yield in aprotic solvents and shift in solvent-polarity-dependent switch between normal and tautomer emissive forms. This derivative offers new possibilities in designing novel molecular sensors. (C) 2001 Elsevier Science Ltd. All rights reserved.