Yellow Circularly Polarized Luminescence from C1‐Symmetrical Copper(I) Complexes

• Published in: Angewandte Chemie International Edition Vol. 59; no. 3; pp. 1228 - 1231
• Main Authors: Deng, Min, Mukthar, Nishya F. M., Schley, Nathan D., Ung, Gaël
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 13-01-2020
• Edition: International ed. in English
• Subjects: carbenes; Chirality; Circular polarization; circularly polarized luminescence; Coordination compounds; Copper; Copper compounds; Emission spectra; Emitters; Luminescence; Spectral emittance; transition-metal complexes
• ISSN: 1433-7851; 1521-3773
• DOI: 10.1002/anie.201913672

The synthesis of chiral C1‐symmetrical copper(I) complexes supported by chiral carbene ligands is described. These complexes are yellow emitters with modest quantum yields. Circularly polarized luminescence (CPL) spectra show a polarized emission band with dissymmetry factors |glum|=1.2×10−3. These complexes are the first reported examples of molecular copper(I) complexes exhibiting circularly polarized luminescence. In contrast with most CPL‐emitting molecules, which possess either helical or axial chirality, the results presented show that simple chiral architectures are suitable for CPL emission and unlock new synthetic possibilities.
And it was all yellow: The synthesis of chiral C1‐symmetrical copper(I) complexes supported by chiral carbene ligands is described. These complexes are yellow emitters with modest quantum yields. Circularly polarized luminescence (CPL) spectra show a polarized emission band with dissymmetry factors |glum|=1.2×10−3. These complexes are the first reported examples of molecular copper(I) complexes exhibiting circularly polarized luminescence.