Synthesis and Study of Photothermal Properties of a Mixed-Valence Nanocluster Cu/Cu with Strong near-Infrared Optical Absorption Supported by 4--Butylcalix[4]arene Ligand.

The first mixed-valence nanocluster Cu/Cu with the highest percentage of Cu ions was synthesized by using 4--butylcalix[4]arene (Calix4), with the formula DMF⊂[(CO)@CuCu(Calix4)Cl(DMF)(HO)]•DMF (), as a photothermal nanocluster. Its structure was characterized using single-crystal X-ray diffraction, Fourier-transform infrared spectroscopy, and powder X-ray diffraction. In addition, the charge state and chemical composition of the nanocluster were determined using electrospray ionization spectrometry and X-ray photoelectron spectroscopy (XPS) spectrum.

Construction of eight mixed-valence pentanuclear CuI4Cu clusters using ligands with inhomogeneous electron density distribution: synthesis, characterization and photothermal properties.

To enhance light absorption in the visible region for the utilization of sunlight, eight mixed-valence polynuclear Cu/Cu clusters have been synthesized for evaluating their photothermal conversion performance. They are fabricated considering the ligand's electron density distribution inhomogeneity using 1,2,3-triazole (3N) or tetrazole (4N) and different mono-phosphine ligands. We report here the synthesis, crystal structure, characterization, optical properties, and photothermal conversion performance of these clusters.

Acute oral toxicity test and assessment of combined toxicity of cadmium and aflatoxin B in kunming mice.

Cadmium and aflatoxin B (AFB) are both common and widespread pollutants in food and feed. There are several reports on toxicity induced by Cadmium or AFB alone, but few address the toxicity caused by co-exposure to the two substances. In this study, 42 female and 42 male Kunming (KM) mice were divided into seven groups to test the acute oral toxicity of CdCl and AFB, using Karber's method.