Combining Aurophilic Interactions and Halogen Bonding To Control the Luminescence from Bimetallic Gold−Silver Clusters

Abstract

The luminescence in a series of new bimetallic gold-silver vapochromic structures can be efficiently switched among different colors simply by exposure to solvent vapors. The emission color in these systems is controlled by both aurophilic interactions and halogen bonding, which affect the emission energy through different orbitals.

Redox Sorption and Recovery of Silver Ions as Silver Nanocrystals on Poly(aniline‐co‐5‐sulfo‐2‐anisidine) Nanosorbents

“…The reaction mixture was vigorously magnetically stirred for 24 h at 25 8C. The resulting copolymer nanograins were washed thoroughly with distilled water by centrifugation to remove the residual oxidant, water-soluble oligomers, and byproducts until no SO 4 2À was evident on dripping BaCl 2 solution into the filtrate. The solid black particles were left to dry in ambient air at 40 8C for 7 d. The nominal polymerization process is shown in Scheme 1:…”

“…Silver is a precious metal used worldwide as currency and in functional nanomaterials for antimicrobial activity, [1] DNA and microRNA detection, [2] multicolor photochromism, [3] color luminescence, [4,5] self-erasing multicolor imaging, [6] catalytic activity, and optoelectronic effects. [7] Compared with early inefficient methods, modern techniques for silver recovery from scrap and wastewaters such as photographic films, X-ray films, and jewelry are highly efficient, and include sorption, precipitation, ion exchange, reductive exchange, and electrolysis.…”

Halogen Bonding in Crystal Engineering

“…[74]It has also been used for selective recognition of halide anions and employed in host-guest systems. [23] There are examples of the use of halogen bonding for controlling the luminescent properties of Au2-Ag2 clusters and the birefringence properties of chains of square planar Au complexes [45,75]. There are also examples of the utilization of halogen bonding in catalysis.…”

A Novel Three-Fold Interpenetrating Three-Dimensional Co(II) Coordination Polymer Based on Flexible Bistriazole Ligand: Synthesis, Structure and Magnetic Properties

“…In recent years, coordination polymers have attracted a great deal of interest not only owing to their regulated and interesting structural topologies but also because of their potential applications in the fields of ion-exchange, catalysis, photoluminescence, magnetism and gas storage [1][2][3][4][5][6]. Generally, the assembly of coordination polymer is mainly affected by the combination of a few factors such as temperature, the neutral ligands, the organic anions, the metal atoms, etc.…”