کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5372255 1388870 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of spectral heterogeneity of prodan and laurdan solutions on the transfer of electronic energy to octadecyl rhodamine B
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Influence of spectral heterogeneity of prodan and laurdan solutions on the transfer of electronic energy to octadecyl rhodamine B
چکیده انگلیسی

Fluorescence quenching and resonance energy transfer have been studied by steady-state fluorescence spectroscopy. The experimental and theoretical values for the rate constants of the electronic energy transfer (kET) and critical radius (R0) were determined for prodan and laurdan as donors and octadecyl rhodamine B as acceptor. The spectroscopic data show, that prodan and laurdan in solution create an inhomogeneous spectroscopic medium in which multi-channel luminescence phenomena take place. This finding indicated that the modified form of the Stern-Volmer relation should be used for analyzing fluorescence quenching data. Results of performed studies point out, that dipole-dipole interaction is responsible for the resonance energy transfer from prodan and laurdan to octadecyl rhodamine B. The relative quenching efficiencies of both dyes depend on polarity of the medium and are higher for more polar solvent (AcN).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biophysical Chemistry - Volume 121, Issue 1, 20 April 2006, Pages 57-64
نویسندگان
, , ,