An investigation of energy transfer between coumarin 35 and xanthene derivatives in liquid medium

Toprak M., ARK M.

Turkish Journal of Chemistry, cilt.34, sa.2, ss.285-293, 2010 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 34 Sayı: 2
  • Basım Tarihi: 2010
  • Doi Numarası: 10.3906/kim-0808-40
  • Dergi Adı: Turkish Journal of Chemistry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.285-293
  • Anahtar Kelimeler: Coumarin 35, Fluorescence energy transfer, Fluorescence intensity quenching, Pyronin compounds
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Hayır

Özet

The energy transfer between coumarin 35 (C35) and pyronin compounds, which are xanthene derivatives, i.e. pyronin B (PyB) and pyronin Y (PyY), in methanol was investigated at room temperature by using steady-state absorption, emission, and time-resolved fluorescence spectroscopy. Fluorescence energy transfer rate constants (kT ) and critical radius (Ro) were determined for C35-PyB and C35-PyY molecular pairs in methanol. The obtained values of kT and Ro indicated that the dipole-dipole interaction between C35-PyB and C35-PyY molecular pairs accounted for the energy transfer mechanism. The energy transfer efficiency and the distance between the donor and acceptor (r) were also calculated for donor-acceptor pairs using Förster's theory. © TÜBİTAK.