An investigation of energy transfer betw Xanthene

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

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 (R0) were determined for C35-PyB and C35-PyY molecular pairs in methanol. The obtained values of kT and R0 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.
Anahtar Kelimeler:

Fluorescence energy transfer; coumarin 35, pyronin compounds, fluorescence intensity quenching.

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

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 (R0) were determined for C35-PyB and C35-PyY molecular pairs in methanol. The obtained values of kT and R0 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.
Keywords:

Fluorescence energy transfer; coumarin 35, pyronin compounds, fluorescence intensity quenching.,

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Turkish Journal of Chemistry-Cover
  • ISSN: 1300-0527
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK
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