New fluorescence correlation spectroscopy (FCS) suitable for the observation of anomalous diffusion in polymer solution: Time and space dependences of diffusion coefficients

被引：15

作者：

Masuda, Akiko ^{[1
]}

Ushida, Kiminori ^{[1
]}

Okamoto, Takayuki ^{[1
]}

机构：

[1] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2006年 / 183卷 / 03期

关键词：

diffusion; anomalous diffusion; extracellular matrix; hyaluronan; fluorescence correlation spectroscopy; confocal microscope; inhomogeneous system; soft matter; time dependence; distance dependence;

D O I：

10.1016/j.jphotochem.2006.06.040

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We propose a new method of fluorescence correlation spectroscopy (FCS) enabling direct detection of anomalous diffusion as the distance dependence of diffusion coefficients (DDDC), namely, sampling-volume-controlled (SVC)-FCS. In discussing the results of SVC-FCS measurement of molecular diffusion in aqueous hyaluronan (HA) solutions in this paper, we suggest the use of "local anomalous diffusion" based on the differential of the mean-square displacement (MSD) which is convenient for understanding the total lineshapes of the observed diffusion coefficient as a function of the diffusion distance or the diffusion time. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：304 / 308

页数：5

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