Structure and emission properties of dinuclear copper(i) complexes with pyridyltriazole

Abstract

New highly emissive copper(i) complexes based on 3/4-pyridyltriazole have been synthesized and fully characterized. Photophysical properties and the mechanism of photo- and mechanochromic and excitation dependent luminescence are discussed.

Mononuclear copper(i) complexes bearing a 3-phenyl-5-(pyridin-4-yl)-1,2,4-triazole ligand: synthesis, crystal structure, TADF-luminescence, and mechanochromic effects

“…2a, b and c show the molecular structures of 1, 2 and 3, respectively. In contrast to the previously described binuclear [Cu 2 I 2 L 2 (PPh 3 ) 2 ] complex 39 obtained similarly to complex 3, but with a reagent molar ratio of 1 : 1 : 1, the new complexes 1-3 have a mononuclear structure. The most relevant structural parameters of complexes 1-3 are presented in Table S2.…”

“…41 In addition the second peak close to 301-303 nm is observed and assigned to π-π* transitions within the triazole ligand. 39 In the low energy region, close to 370-385 nm a broad absorption band, which is mainly attributed to a metal-to-ligand chargetransfer (MLCT) transition. 34,43,44 Luminescence spectra for the complexes 1-3 recorded in the solid state at room temperature and 77 K and in CH 3 CN solution at 298 K are shown in Fig.…”

Heterometallic Au(I)–Cu(I) Clusters: Luminescence Studies and1O2Production

“…A red shift of the emission is recorded in almost all cases (except for Cu2a ) when the powders are cooled (Figure ). The observed red shift at low temperatures has been observed in other heterometallic Au­(I)/Cu­(I) complexes reported in the literature. − …”

Copper(i) iodide coordination polymers with triazole substituted pyridine ligands: photophysical and electrical conductivity properties

“…41 Along with this, copper( i ) complexes with pyridine substituted 1,2,4-triazole and phosphines as ancillary ligands have also been reported to show thermochromic luminescence properties. 42–45…”

“…41 Along with this, copper(I) complexes with pyridine substituted 1,2,4triazole and phosphines as ancillary ligands have also been reported to show thermochromic luminescence properties. [42][43][44][45] Considering these facts, we have chosen three different isomeric, molecularly rigid pyridine substituted 1,2,4-triazol-1-yl ligands L 1 , L 2 and L 3 , having multiple coordinating sites at different positions (Fig. 1).…”