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

Authors

MAHMUT TOPRAK
MUSTAFA ARIK

DOI

10.3906/kim-0808-40

Abstract

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 (k_T) and critical radius (R_0) were determined for C35-PyB and C35-PyY molecular pairs in methanol. The obtained values of k_T and R_0 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.

First Page

285

Last Page

294

Recommended Citation

TOPRAK, MAHMUT and ARIK, MUSTAFA (2010) "An investigation of energy transfer between coumarin 35 and xanthene derivatives in liquid medium," Turkish Journal of Chemistry: Vol. 34: No. 2, Article 14. https://doi.org/10.3906/kim-0808-40
Available at: https://journals.tubitak.gov.tr/chem/vol34/iss2/14