A Heptanuclear Copper Iodide Nanocluster

Abstract

Nanoscale molecular clusters are attractive for the design of materials exhibiting original functions and properties. In particular, copper iodide clusters of high nuclearity are well-known for their stimuli-responsive luminescence properties. The synthesis and characterization of an unprecedented copper(I) iodide molecular cluster based on an original heptanuclear inorganic core are reported. This nanometer-size cluster is formulated as [CuI(P(CHCF))(CHCN)] and its novel structure has been characterized by X-ray diffraction and multinuclear solid-state Cu,P, C,F, and H NMR spectroscopy. The photoluminescence properties of this cluster have been studied at variable temperature. Density functional theory calculations have been performed on this large molecular structure and allow one to rationalize the observed luminescence properties. This study highlights the crucial role of cuprophilic interactions in molecular copper iodide clusters for exhibiting photoactive properties.

Highly soluble fluorine containing Cu(i) AlkylPyrPhos TADF complexes

“…[42][43][44] Recently tris(4-trifluoromethylphenyl)phosphine has been reported in a luminescent tetra-and heptanuclear copper iodide cluster. 45,46 This work presents Cu(I) AlkylPyrPhos TADF complexes including tris(4-fluorophenyl)-(b), tris(4-trifluoromethylphenyl)-(c) and tris(4-chlorophenyl)phosphine (d) as ancillary ligands in combination with a selection of alkylated pyridine bridging ligands, including the novel 2-(diphenylphosphino)-4-tert-butylpyridine (3) as well as the previously described (4-methyl-2-(diphenylphosphino)pyridine 47 (2), 4-(cyclopentylmethyl)-2-(diphenylphosphino)pyridine 23 (4), and the commercially available 2-(diphenylphosphino)pyridine (1) (Fig. 1).…”

Regulated Adaptive Self-Assembly of Cu3I3 Supramolecular Clusters and their Photocatalytic Properties

“…Cu­(I) coordination chemistry has drawn considerable attention due to several interesting structural features and properties. − A copper­(I) coordination system, cuprous iodide cluster aggregates (CuI) x , possess fascinating structures, including Cu 2 I 2 rhomboid dimers, − Cu 3 I 3 trimers, Cu 4 I 4 cubane tetramers, , Cu 6 I 6 staircase hexamers, − Cu 7 I 7 pinwheel heptamers, − Cu 8 I 8 staircase octamers, − and so forth. These structures also exhibit a wide range of physical and chemical properties, such as electroluminescence, − electrical conductivity, photocatalysis, and fluorescence sensing. − Furthermore, from economic and environmental points of view, the natural abundance and low toxicity of copper also make cuprous iodide cluster species attractive prospects.…”

Various Structural Design Modifications: para-Substituted Diphenylphosphinopyridine Bridged Cu(I) Complexes in Organic Light-Emitting Diodes

“…The structural diversity of luminescent Cu­(I) complexes is enormous. Many examples have been already presented in the literature, ranging from polynuclear copper clusters, − over tetranuclear − and some trinuclear − structures to a variety of dinuclear ,− and mononuclear − complexes. Multinuclear copper complexes are of special interest because of their luminescence-enhancing cooperative effects in case the copper centers are in close proximity.…”