Fluorescence Correlation Spectroscopy

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  • L. Beranová J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague
  • J. Humpolíčková J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague
  • M. Hof J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague

Abstrakt

Basic principles of fluorescence correlation spectroscopy (FCS) are explained. The method affords diffusion coefficients and concentrations of fluorescent-labeled species by studying temporary fluctuations of fluorescence signal caused by diffusion through the focal volume of confocal microscope. In dual-color FCS, cross-correlation of two signals from molecules labeled with two spectrally shifted dyes allows to observe interactions between the two molecules. It is also possible to distinguish between the signals of two dyes with different lifetimes. FCS uses pulsed laser excitation.

Publikováno

15.03.2009

Jak citovat

Beranová, L., Humpolíčková, J., & Hof, M. (2009). Fluorescence Correlation Spectroscopy. Chemické Listy, 103(2). Získáno z http://ww-w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/1569

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