An investigation of energy transfer between coumarin 35 and xanthene derivatives in liquid medium
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 (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
F¨orster’s theory.
Koleksiyonlar
- Kimya [22]
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