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Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells

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Colorimetry of Luminescent Lanthanide Complexes.

Julien Andres¹, Anne-Sophie Chauvin^1,2

¹Section of Chemistry and Chemical Engineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.

Molecules (Basel, Switzerland)

|September 9, 2020

Summary

Trivalent lanthanide ions like Europium (Eu) and Terbium (Tb) show potential for colorimetric applications. Accurate color reproduction relies on instrumental correction functions and careful selection of luminescent probes for anti-counterfeiting uses.

Keywords:

colorimetry colour dysprosium europium lanthanide luminescence samarium terbium

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Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

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Published on: April 14, 2020

Area of Science:

Luminescent materials science
Colorimetry
Spectrophotometry

Background:

Trivalent lanthanide ions (Eu, Tb, Dy, Sm) are key emitters in the visible spectrum.
These ions have potential applications in colorimetry and color reproduction.

Purpose of the Study:

To investigate the colorimetric potential of visible-spectrum lanthanide ions.
To analyze factors affecting accurate color reproduction using luminescent probes.
To explore the generation of color gamuts and metameric colors for anti-counterfeiting.

Main Methods:

Conversion of spectral data to color coordinates for lanthanide complexes.
Evaluation of ligand-induced color shifts and hypersensitive transitions.
Assessment of spectrophotometric parameters, including instrumental correction functions.
Establishment of color gamuts using Eu and Tb complexes with blue fluorescent compounds.

Main Results:

Europium (Eu) exhibits the highest sensitivity to ligand-induced color shifts among visible lanthanide ions.
The instrumental correction function is the most critical spectrophotometric parameter for accurate color values.
A full color gamut can be generated by combining red-emitting Eu, green-emitting Tb, and blue fluorescent compounds.
Proper white point selection is crucial for accurate color representation.

Conclusions:

Lanthanide complexes offer tunable color properties for various applications.
Precise spectrophotometric measurements, particularly instrumental correction, are vital for reliable colorimetric analysis.
The strategic combination of luminescent probes can create specific color gamuts and metameric colors for security features.