Synthetic Diversity and Luminescence Properties of ArN(PPh₂)₂‐Based Copper(I) Complexes

Abstract

The dinuclear copper(I) complexes 1 and 2 were prepared by reacting PNP ligands ArN(PPh 2 ) 2 , (Ar = 2,6-Me 2 C 6 H 3 ; L1) with CuCl and CuBr. By altering the position of the methyl substituents from ortho to meta (Ar = 3,5-Me 2 C 6 H 3 ; L2), trinuclear copper(I) complexes 3 and 4 were obtained, while the methyl substituent at the para position (Ar = 4-MeC 6 H 4 ; L3) ledThe copper(I) complexes have been studied recently with great interest as they exhibit structural diversities, [1] metallophilicity, [2] rich photophysical properties, [3] and have been found to have applications in catalysis, [4] as well as in organic light-emitting diodes (OLEDs) as dopants. [5] Previous studies showed that a wide range of structure motifs are accessible by combining copper halides and a variety of N-, P-, O-, and S-based ligand systems leading to di-, tri-, and, tetra-nuclear copper(I) complexes that show strikingly different luminescent behavior. [6][7][8][9] Recently, we reported on the synthesis and luminescence studies of gold(

Transition metal complexes of the PPO/POP ligand: variable coordination chemistry and photo-luminescence properties

“…Despite the fact, that transition metal complexes of PNP-type ligands such as Ph 2 PNRPPh 2 (R = Et, 15 C 6 H 5 , 16 2,6-Me 2 C 6 H 3 , 16,17 C 6 H 3 N 2 S), 18 and coordination complexes of related PNNP-type ligands, e.g. N,N′-bis[(2-diphenylphosphino) phenyl] formamidinate, [57][58][59][60] have been widely investigated with respect to their photo-luminescence (PL) properties, the oxygen-based POP analogue has not been considered in this context.…”

“…† Electronic supplementary information (ESI) available: Selected NMR spectra, cation as stabilising agents for nanoparticles. [10][11][12] Apart from being the anhydride of the corresponding secondary phosphine oxide, the POP tautomer can be regarded as oxygen bridged analogue of well-known dppm-type (bis(diphenylphosphine)methane) 13,14 or PNP-type ligands, [15][16][17][18] which have found to show interesting catalytic and photo-optical properties.…”

“…Furthermore, the investigation of the photo-optical properties of the PPO/POPtransition metal complexes was a key concern of this study, based on the similarity with PNP-type ligands, which have shown remarkable photo-luminescence properties. [15][16][17][18] 2 Results and discussion…”

Phase‐Dependent Long Persistent Phosphorescence in Coumarin‐Phosphine‐Based Coinage Metal Complexes

“…However, it was possible to extract the connectivity from the difference Fourier map. Compound 3 consists of a Cu 3 Cl 2 core, with the three Cu I cations forming an almost equilateral triangle, likely to be stabilized by metallophilic interaction as reported in the literature (Figure S35) [46] . Three copper cations lie on a plane with two capping μ 3 ‐Cl ligands lying above and below the plane and are also coordinated to the phosphines of the ligands in a bridging mode.…”

Luminescent properties of a polymeric copper(I)-bromide complex in a PMMA film

“…With increasing interest in post organic light-emitting diodes (OLEDs), copper(I)-containing stimuli-responsive complexes have attracted considerable attention due to their potential applications in photonic and sensing devices. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] In particular, copper(I)-halide complexes can take multiple coordination forms, depending on the electronic and steric effects of the ligand, such as mono-, di-, tetranuclear, and bridged oligomer or polymer, resulting in diverse photophysical properties. For instance, copper(I)-iodide complexes are characterized by two emission bands derived from different excited states, whose relative intensity changes with temperature.…”