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Related Experiment Videos

Tailor-made dyes for fluorescence correlation spectroscopy (FCS).

P Czerney1, F Lehmann, M Wenzel

  • 1Dyomics GmbH, Bioinstrumentezentrum, Jena, Germany.

Biological Chemistry
|May 12, 2001
PubMed
Summary

Two novel fluorescent dyes were developed for He/Ne laser and red diode laser excitation. These dyes show enhanced quantum yield and emission lifetime when bound to biomolecules, ideal for protein and oligomer labeling in fluorescence correlation spectroscopy (FCS).

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Area of Science:

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy

Background:

  • Fluorescent labeling is crucial for biomolecular analysis.
  • Existing fluorescent labels have limitations in excitation or photophysical properties.
  • Need for novel dyes optimized for specific laser sources like He/Ne and red diode lasers.

Purpose of the Study:

  • To introduce two new fluorescent labels.
  • To optimize these labels for excitation with He/Ne laser and red diode lasers.
  • To demonstrate their application in fluorescence correlation spectroscopy (FCS) and biomolecular labeling.

Main Methods:

  • Synthesis of two novel fluorescent dyes.
  • Characterization of photophysical properties (quantum yield, emission lifetime).

Related Experiment Videos

  • Application in labeling proteins and oligomers.
  • Demonstration using fluorescence correlation spectroscopy (FCS).

    • Main Results:

    • The new dyes are efficiently excited by He/Ne laser and red diode lasers.
    • A significant increase in quantum yield and emission lifetime was observed upon binding to biomolecules.
    • Successful application in labeling proteins and oligomers was demonstrated.
    • Utility in FCS experiments was confirmed.

    Conclusions:

    • The developed fluorescent labels offer improved performance for specific laser excitation.
    • The dyes exhibit enhanced photophysical properties upon biomolecular binding.
    • These labels are suitable for advanced applications like FCS and studying protein/oligomer dynamics.