- Circularly Polarized-Electrochemiluminescence from a Chiral Bispyrene Organic Macrocycle
Zinna, F.; Voci, S.; Arrico, L.; Brun, E.; Homberg, A.; Bouffier, L.; Funaioli, T.; Lacour, J.; Sojic, N.; Di Bari, L.
Angew. Chem. Int. Ed. 2019, 58, 6952-6956
The first observation of circular polarization of electrochemiluminescence (ECL) from a purely organic derivative is reported. A bis-pyrene scaffold mounted on a constrained polyether macrocycle displaying intense excimer fluorescence and highly circularly polarized (CP) photoluminescence has been selected for this purpose. Such compound displays an ECL dissymmetry factor of ca. |8×10-3|, in good agreement with the corresponding photoluminescence value. This observation is the first step towards the molecular engineering of bespoke suitable dyes acting both as ECL and CP-ECL reporters for (bio)analysis by bringing a new level of information when dealing with chiral environments. In addition, it provides an extra-dimension to the ECL phenomenon and opens the way to chiral detection and discrimination.
DOI : 10.1002/anie.201901303
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