Optical properties and chemical behavior of Laser-dye Coumarin-500 and the influence of atmospheric corona discharges

KESKİN S. S., Aslan N., Bayrakceken N.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, cilt.72, sa.2, ss.254-259, 2009 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 72 Sayı: 2
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.saa.2008.09.024
  • Dergi Adı: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.254-259
  • Anahtar Kelimeler: Coumarin-500, Laser-dye, UV-Vis spectrum, Raman scattering, FTIR spectrum, Plasma discharge treatment, GAIN CHARACTERISTICS, FLUORESCENCE, INTENSITY, MOLECULES, EMISSION, STATE
  • Marmara Üniversitesi Adresli: Evet

Özet

Structure elucidation of Coumarin-500 Laser-dye in cyclohexane at room temperature has been studied by UV-Vis, Raman, and FTIR spectroscopic techniques. Optical properties and chemical behavior under the influence of atmospheric positive electric pulsed corona discharges were also examined. The effects of UV-Vis irradiation changed some optical parameters, such as decrease in optical density on the absorption spectrum and formation of photoproducts, due to the chromaticity removal. No significant optical changes were observed in the light absorption upon UV-irradiation but large changes in absorption spectrum were observed after positive electric corona discharge treatments. FTIR and Raman spectra in non-polar solvent are recorded and interpreted. (c) 2008 Elsevier B.V. All rights reserved.