کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402912 | 1392745 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improving the fluorescence polarization method to evaluate the orientation of fluorescent systems adsorbed in ordered layered materials
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Improving the fluorescence polarization method to evaluate the orientation of fluorescent systems adsorbed in ordered layered materials Improving the fluorescence polarization method to evaluate the orientation of fluorescent systems adsorbed in ordered layered materials](/preview/png/5402912.png)
چکیده انگلیسی
The fluorescence polarization method, recently developed for the evaluation of the preferential orientation of fluorescent dyes adsorbed in layered materials [F. López Arbeloa, V. MartÃnez MartÃnez, J. Photochem. Photobiol. A: Chem. 181 (2006) 44], is readapted to improve its application. Fluorescence polarization was previously obtained by recording the emission intensity for two orthogonal orientations of the emission polarizer (i.e., the horizontal and vertical polarized light) after excitation with vertical or horizontal polarized light. In the method proposed in this work, samples are excited with unpolarized light, reducing the polarization effect of the excitation light scattering at those emission wavelengths close to the excitation wavelength. Moreover, the present method decreases the effect of the orientation of other non-fluorescent species present in the system, which are active in the excitation process. Consequently, the new method is more simple, precise and sensitive. It is applied to evaluate the orientation of rhodamine 6G dye adsorbed in ordered laponite clay films with low and moderated dye loadings.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 129, Issue 11, November 2009, Pages 1336-1340
Journal: Journal of Luminescence - Volume 129, Issue 11, November 2009, Pages 1336-1340
نویسندگان
Sandra Salleres, Fernando López Arbeloa, Virginia MartÃnez MartÃnez, Teresa Arbeloa, Iñigo López Arbeloa,