2 research outputs found
Multifunctional System Polyaniline-Decorated ZIF‑8 Nanoparticles as a New Chemo-Photothermal Platform for Cancer Therapy
Tuning Photoluminescent Properties of Silver(I)-Based Coordination Networks through their Supramolecular Interactions
Eight
novel luminescent silver(I)-based coordination networks have
been self-assembled from two flexible dicyanomethylene ligands bearing
diethylene (<b>L1</b>) and triethylene glycol (<b>L2</b>) spacers and silver salts (AgClO<sub>4</sub> or AgBF<sub>4</sub>) in dichloromethane/toluene or dichloromethane/benzene solvents.
Single-crystal X-ray diffraction reveals a variety of geometries around
the silver(I) ion, resulting in mono-, bi-, and tetranuclear networks
with rare topologies. The coordination networks show two-dimensional
architectures through coordination of the cyano and glycolic groups
to the silver(I) ions. The three-dimensional supramolecular arrangement
is formed through weak π···π and Ag···π
interactions as well as hydrogen bonds between water molecules and
ClO<sub>4</sub><sup>–</sup> and BF<sub>4</sub><sup>–</sup> counterions. The silver(I)-based coordination networks display green
to yellow emissions in the solid state, with quantum yields (Φ<sub>em</sub>) varying from 1.1 to 8.5%. The emission properties are attributed
to intraligand charge transfer and metal-perturbed intraligand transitions.
Supramolecular interactions, such as Ag···π and
π···π interactions, play an important role
in the photophysical properties of these compounds