A white phosphorescent coordination polymer with Cu₂I₂ alternating units linked by benzo-18-crown-6

Abstract

A new approach has been illustrated for the development of stable, efficient, and environmentally "friendly" white phosphorescent materials. Under mild conditions, a new one-dimensional coordination polymer has been prepared from benzo-18-crown-6 with CuI in the presence of KI, which is capable of emitting direct white light in the solid state.

Multistimuli Response Micro‐ and Nanolayers of a Coordination Polymer Based on Cu2I2 Chains Linked by 2‐Aminopyrazine

“…Therefore, they have attracted recent attention towards potential applications. [15, 20] Previous works have shown that the emission energies of Cu(I)-iodide complexes are strongly affected by the presence of heterocyclic organic ligands linked to the metal center of the [Cu n I n ] chains, mainly due to structural changes induce by the presence of these terminal ligands and/or their supramolecular interactions. [14d, 14e] Mostly, the luminescent emissions observed are assigned to iodide-to-copper(I) charge transfer (IMCT), metal to ligand charge transfer (MLCT), halogen-to-ligand charge transfer (ILCT), cluster-centered (CC) transition, or the admixture of more than one of these contributions.…”

Sequential X-ray-Induced Single-Crystal to Single-Crystal Transformation followed by Topotactic Reduction in a Potassium Crown Ether Complex of Tetrachloroaurate(III)

“…6b). Interestingly, we note that the X-ray single crystal structures of the copper(I) 14 and silver(I) congeners have been determined and are isostructural and isomorphous. same space group, the crown ether rings retain the alternating arrangement characteristic of both gold(III) polymorphs, which would be expected given the relationships through solid-state interconversion (Fig.…”

Luminescent monomeric and polymeric cuprous halide complexes with 1,2-bis(3,5-dimethylpyrazol-1-ylmethyl)-benzene as ligand

“…Perspectives views of F1 and F2 are shown in Fig.1 and Fig.2, respectively. The crystallographic data of the complexes are given in Table 1 Cu-Br distance is 2.3472 Å, which is shorter than that of four-coordinated Cu(I) bromide complexes (2.5369 Å) [10], but a slightly longer than that of two-coordinated complex (2.2012 Å) [9], probably attributed to the steric hindrance around Cu center. The Cu-N bond lengths of the complex localize in a region of 2.007-1.973 Å, which are comparable to the literature values [15].…”

“…It should be noted that the relatively short Cu1-Cu2 distance in F1 is less than twice the van der Waals radius (1.4 Å) of Cu(I), implying a strong metal-metal interaction may exist between the two Cu atoms [16]. The phenomenon of Cu-Cu interaction has been extensively observed for Cu 4 I 4 clusters and other multinuclear Cu(I) complexes [9,17].…”

“…Based on our earlier observations on a series of copper (I) chain polymers and dimeric complex [9], the coordination behavior (terminal or bridging mode) has been supposed to depend on the nature of the halide ligand. In particular, formation of halide bridges has been found to be favored for the "soft" iodide but not for the "harder" chloride ligands, whereas both bridging and terminal bonding modes were observed for the bromide ligands since bromide lies on the borderline between soft and hard bases [10].…”