Do’s and don’ts when visiting circularly polarized luminescence

This perspective describes an overview about the principles, applications and limitations of circularly polarized luminescence (CPL) based on the group experience in the field in the last decade. Central to the discussion is the dissymmetry factor (glum), whose value is dictated by the interplay between electric and magnetic transition dipole moments, although other metric are also considered and described. Organic and inorganic molecular designs resulting in enhanced CPL responses and efficiency are commented. Potential applications in sensing applications are critically evaluated. In this later case, CPL flurophores in NIR wavelengths are specially interesting. Moreover, the integration of CPL emitting molecules in solid devices as well as other relationship with chiral-based properties as chiral induce spin selectivity effect are also analysed. In our perspective, integrating theoretical frameworks and artificial inteligence metodologies with cutting-edge experimental data will set the stage for future research aimed at overcoming current limitations and exploiting CPL in both fundamental and technological innovation. Finally, we also include personal considerations about present and future of CPL field.