Toward Rhenium-Based Circularly Polarized OLEDs Using Tailored Chiral Re(CO) Emitters.

Chiral rhenium(I) emitters exhibiting circularly polarized phosphorescence (CPP) are an attractive mainstay for CP organic light-emitting diodes (CP-OLEDs). However, the efficiency of such emitters is not ideal, and they have never been explored for circularly polarized electroluminescence (CPEL) applications. Here, we have tailored robust chiral Re(I) complexes with improved CPP properties, and demonstrated CPEL from rhenium emitters for the first time.

Coinage metal(I) clusters supported by a 1,10-phenanthroline-phosphine: orange-to-NIR phosphorescence, metallophilic interactions and enhanced cytotoxicity.

A series of small coinage metal(I) clusters has been selectively synthesized using 2-(diphenylphosphino)-1,10-phenanthroline (L), a new promising dimetal-binding -ligand (L). Its reaction with CuI yields the complex [CuL(μ-I)][CuI], while the treatment of L with Au(tht)Cl/Ag or Au(tht)Cl/Cu systems leads to the assembly of [AuAgLCl], [AuCuLCl], [CuAuL] and [AgAuL] clusters. Theoretical analysis revealed pronounced intermetallic close shell interactions in these di- and trinuclear ensembles.

Outstanding Circularly Polarized TADF in Chiral Cu(I) Emitters: From Design to Application in CP-TADF OLEDs.

Low-cost molecular emitters that merge circularly polarized luminescence (CPL) and thermally activated delayed fluorescence (TADF) properties are attractive for many high-tech applications. However, the design of such emitters remains a difficult task. To address this challenge, here, we propose a simple and efficient strategy, demonstrated by the design of pseudochiral-at-metal complexes [Cu(L*)DPEPhos]PF bearing a (+)/(-)-menthol-derived 1,10-phenanthroline ligand (L*).

Fast and reversible solvent-vapor-induced 1D to 2D transformation in emissive Ag(I)-organic networks.

We report here an unprecedentedly fast and reversible transformation between 1D and 2D MOFs/CPs induced through organic solvent vapours. The transformations occur at room temperature in just 15-20 min, accompanied by a significant change in the observed phosphorescence. These findings provide a new insight into the design of luminescent networks with stimuli-switchable dimensionality.

Synthesis, Structure, and Magnetic and Biological Properties of Copper(II) Complexes with 1,3,4-Thiadiazole Derivatives.

New coordination compounds of copper(II) with 2,5-bis(ethylthio)-1,3,4-thiadiazole (L) and 2,5-bis(pyridylmethylthio)-1,3,4-thiadiazole (L) with compositions Cu(L)Br, Cu(L)(CN), Cu(L)Cl, and Cu(L)Br were prepared. The complexes were identified and studied by CHN analysis, infrared (IR) spectroscopy, powder X-Ray diffraction (XRD), and static magnetic susceptibility. The crystal structures of Cu(II) complexes with L were determined.