Pt^II(C^N)(N-donor ligand)Cl-type complexes showing highly sensitive aggregation-induced phosphorescence emission (AIPE) behavior fulfilled by long-size ligands and a distorted molecular configuration

Abstract

A series of four-coordinated PtII(C^N)(N-donor ligand)Cl-type complexes have been synthesized through combination between long-size C^N-type and N-donor ligands. In addition, by variating the coordinating site in the N-donor ligand, distorted...

Reblooming of the cis-Bis(2-phenylpyridine) Platinum(II) Complex: Synthesis Updating, Aggregation-Induced Emission, Electroluminescence, and Cell Imaging

“…Yam and co-workers synthesized an AIE-active bipyridine-based Pt­(II) complex with a photoluminescence quantum yield (PLQY) of 72% at the aggregation state, which was employed as a light-emitting layer for electroluminescence (EL), showing a current efficiency of 18.4 cd A –1 and an external quantum efficiency (EQE) of 5.8% . Several AIE Pt­(ppy)­(N-donor ligand)­Cl-type complexes exhibit PLQY at aggregation states as high as 80% and EQE up to 28%. − Liu and co-workers reported a difluoro-boron-dipyrrolethynylene-based AIE Pt­(II) complex, which shows good optical limiting properties . Overall, AIE-active Pt­(II) complexes remain very limited in comparison with pure organic AIE emitters, and their emission enhancement is also ascribed to the restricted intramolecular motion. − Given the unique advantages and significant application potential of AIE-active Pt­(II) complexes, more effort should be devoted to promoting their development.…”