We report the synthesis of a new family of chiral dipicolinamide systems presenting an extended π-conjugated backbone connecting an electron-donating group (─NMe2) to a pyridine unit. The chirality is introduced on the amide chains located at positions 2 and 6 of the pyridine, by employing commercially available enantiopure amines. Besides the good quantum yields shown in solution (up to 15%), two of the synthesized molecules are endowed with nonreciprocal chiroptical properties when they form thin films on a glass substrate, showing a strong circularly polarized luminescence with |glum| values as high as 0.06.
Chiral Dipicolinamide-Based Push–Pull π-Conjugated Systems as Nonreciprocal Circularly Polarized Luminescence Emitters
Petri F.;Gherardi L.;Di Bari L.;Arrico L.
2026-01-01
Abstract
We report the synthesis of a new family of chiral dipicolinamide systems presenting an extended π-conjugated backbone connecting an electron-donating group (─NMe2) to a pyridine unit. The chirality is introduced on the amide chains located at positions 2 and 6 of the pyridine, by employing commercially available enantiopure amines. Besides the good quantum yields shown in solution (up to 15%), two of the synthesized molecules are endowed with nonreciprocal chiroptical properties when they form thin films on a glass substrate, showing a strong circularly polarized luminescence with |glum| values as high as 0.06.File in questo prodotto:
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