Circularly Polarized Luminescence (CPL)

Luminescent chiral molecules can shine circularly polarized light. This phenomenon is called Circularly Polarized Luminescence (CPL). It can be considered the equivalent of Circular Dichroism (CD) in emission.

It is somewhat more limited than CD because luminescent groups (luminophores) are less common than chromophores, but it may have very relevant applications.

There are several ways to stimulate light emission and we can distinguish between photoluminescence or PL, electroluminescence EL, or the more exotic chemo- and triboluminescence, CL and TL. In CL the luminophores are excited by an exothermic chemical reaction, similarly to the glow sticks as lures for fishing. In TL the a mechanical stress, like hitting or rubbing the material determines photon emission.

We are interested in all systems leading to high or very high CPL: mostly in lanthanide complexes, which dislay brilliant and colorful emission, as well as in other metal complexes and in purely organic luminophores

Università di Pisa
Lungarno Pacinotti 43, 56126 Pisa
P.I. 00286820501
C.F. 80003670504

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