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Progress in lanthanides as luminescent probes.

I Hemmilä1, V Laitala

  • 1Perkin Elmer Life and Analytical Sciences, Wallac Oy, P.O. Box 10, FIN-20101, Turku, Finland. ilkka.hemmila@perkinelmer.com

Journal of Fluorescence
|September 17, 2005
PubMed
Summary

Luminescent lanthanide chelates offer unique properties for biomolecular and medical research, enabling advanced assays and imaging. Their energy transfer capabilities open new possibilities for innovative assay formats.

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Area of Science:

  • Biomolecular research
  • Medical research
  • Analytical chemistry

Background:

  • Lanthanide chelates possess unique luminescent properties, including long Stokes' shift and long decay times.
  • These properties allow for efficient temporal discrimination of background interference in various assays.
  • Recent advancements include novel organometallic complexes and encapsulation in matrices for enhanced applications.

Purpose of the Study:

  • To provide an overview of recent developments in lanthanide chelate-labels.
  • To discuss the energy levels of lanthanides and their exploitation in novel assay formats.
  • To highlight applications in immunoassays, DNA hybridization assays, high-throughput screening, and imaging.

Main Methods:

  • Review of recent literature on lanthanide chelate-labels.
  • Analysis of luminescent properties and energy transfer mechanisms.
  • Discussion of applications in heterogeneous and homogeneous immunoassays, DNA assays, and imaging.

Main Results:

  • Lanthanide chelates enable sensitive and specific assays due to their distinct luminescent characteristics.
  • Encapsulation in matrices extends lanthanide applications and emission wavelengths.
  • Intra-chelate energy transfer offers opportunities for novel assay designs.

Conclusions:

  • Lanthanide chelates are valuable tools in biomolecular and medical research, offering superior performance in assays.
  • Continued development of lanthanide complexes and assay formats promises further advancements in diagnostics and imaging.
  • Exploitation of energy transfer mechanisms in lanthanide systems is key to future innovations.

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