Statistical analysis of diffusion coefficient determination by fluorescence correlation spectroscopy

被引：27

作者：

Enderlein, J ^{[1
]}

Gregor, I ^{[1
]}

Patra, D ^{[1
]}

Fitter, J ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Biol Informat Proc 1 & 2, D-52425 Julich, Germany

来源：

JOURNAL OF FLUORESCENCE | 2005年 / 15卷 / 03期

关键词：

fluorescence correlation spectroscopy; diffusion coefficient; statistical accuracy;

D O I：

10.1007/s10895-005-2633-0

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Fluorescence correlation spectroscopy (FCS) has become an important and widely used technique for many applications in physics, chemistry, and biology. The parameter most frequently addressed by FCS is the diffusion of molecules in solution. Due to the highly non-linear connection between the diffusion coefficient and a measured autocorrelation function, it is extremely difficult to analyse the accuracy of the diffusion-coefficient determination in a FCS experiment. Here, we present a simplified analysis based on some general maximum-likelihood considerations, and numerical result are given for the dependence of the accuracy of the diffusion-coefficient determination on sample concentration, brightness, and measurement time. Optimal concentration values for performing FCS are found.

引用

页码：415 / 422

页数：8

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