New Chromophore Systems from Coumarin-Oxazol-5-one Combination

TOPKAYA TAŞKIRAN D., ALP S.

JOURNAL OF FLUORESCENCE, vol.27, no.4, pp.1413-1420, 2017 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 4
  • Publication Date: 2017
  • Doi Number: 10.1007/s10895-017-2078-2
  • Journal Name: JOURNAL OF FLUORESCENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1413-1420
  • Keywords: Coumarin, Oxazol-5-one, Chromophore, FLUORESCENCE EMISSION, SPECTROSCOPIC PROPERTIES, PECHMANN CONDENSATION, COUMARIN DERIVATIVES, ABSORPTION, DYES, POLYMERS, MOIETIES, CATALYST, SPECTRA
  • Dokuz Eylül University Affiliated: Yes

Abstract

Coumarin-oxazol-5-one (COX), 3a-d, were synthesized with 7-methoxy-2-oxo-2H-chromene-4-carbaldehyde and benzoylglycine derivatives. The characterizations of the COX derivatives by H-1 NMR, FT-IR and elemental analysis were achieved. To obtain the photophysical data of the synthesized COX derivatives were used spectrophotometric and spectrofluorimetric methods. Evaluation of the absorption and emission properties of the structures was carried out in six different solvents. Maximum absorption and emission wavelengths (lambda; nm), molar extinction coefficients (epsilon; cm(-1) M-1), Stoke's shifts (Delta lambda(ST;) nm) and quantum yields (I center dot(F)), of the COX derivatives were declared.