Self-assembly molecular architectures with novel cyclic dimers

Highly emissive conjugated compounds containing pyridine (or pyrimidine) and cyano ligands have been synthesized by palladium-catalyzed cross-coupling reaction. These ligands readily react with Re(CO)3(THF)2Br to form cyclic supramolecules by self-assembly processes. At room temperature these supramolecules are emissive, and the emission is ligand-localized, as evidenced from the Stokes shift and the lifetime data.

Graphical abstractHighly emissive conjugated compounds containing pyridine (or pyrimidine) and cyano ligands have been synthesized. Dimeric complexes with rectangular geometries were formed from these compounds and rhenium carbonyls via self-assembly.Figure optionsDownload full-size imageDownload as PowerPoint slide