Lanthanide circularly polarized luminescence: bases and applications

Area of Science:

• Coordination Chemistry
• Photophysics
• Materials Science

Background:

• Lanthanide (III) luminescence exhibits characteristic narrow emission bands, large Stokes shifts, and long excited-state lifetimes.
• Chiral lanthanide complexes uniquely emit circularly polarized light (CPL), a property rare in organic molecules.
• The sensitivity and specificity of CPL signals make lanthanide complexes valuable for bioanalytical applications.

Purpose of the Study:

• To provide an overview of recently developed CPL-active lanthanide complexes.
• To highlight selected examples of their applications.
• To discuss mechanisms underlying their CPL properties and offer practical guidance on data measurement and reporting.

Main Methods:

• Literature review of recent advancements in CPL-active lanthanide complexes.
• Selection and presentation of key application examples.
• Theoretical discussion of CPL generation mechanisms in lanthanide systems.

Main Results:

• Recent progress in designing and synthesizing CPL-active lanthanide complexes has been reviewed.
• Diverse applications, particularly in bioanalysis, have been demonstrated.
• Key factors influencing CPL properties and measurement considerations were discussed.

Conclusions:

• CPL-active lanthanide complexes are advanced tools with significant potential in bioanalysis and beyond.
• Understanding their photophysical mechanisms is crucial for further development.
• Standardized measurement and reporting are recommended for reliable data.