Carbon-TiO Hybrid Quantum Dots for Photocatalytic Inactivation of Gram-Positive and Gram-Negative Bacteria.

Carbon-semiconductor hybrid quantum dots are classical carbon dots with core carbon nanoparticles doped with a selected nanoscale semiconductor. Specifically, on those with the nanoscale TiO doping, denoted as C-Dots, their synthesis and thorough characterization were reported previously. In this work, the C-Dots were evaluated for their visible light-activated antibacterial function, with the results showing the effective killing of not only Gram-positive but also the generally more resistant Gram-negative bacteria.

Carbon Dots: Classically Defined versus Organic Hybrids on Shared Properties, Divergences, and Myths.

Carbon dots are defined as small carbon nanoparticles with effective surface passivation via organic functionalization. The definition is literally a description of what carbon dots are originally found for the functionalized carbon nanoparticles displaying bright and colorful fluorescence emissions, mirroring those from similarly functionalized defects in carbon nanotubes. In literature more popular than classical carbon dots are the diverse variety of dot samples from "one-pot" carbonization of organic precursors.

Pyridine-4-carboxamidoxime -oxide.

Our work in the area of synthesis of metal-organic frameworks (MOFs) based on organic -oxides led to the crystallization of pyridine-4-carboxamidoxime -oxide. Herein we report the first crystal structure of the title compound, CHNO [systematic name: ()-4-('-hy-droxy-carbamimido-yl)pyridine -oxide]. The hy-droxy-carbamimidoyl group is essentially coplanar with the aromatic ring, r.

Synthesis, characterization, and crystal structures of organonickel(II) complexes coordinated to novel 1-bromo-2,6-bis{[(λ-phosphanylidene)imino]methyl}benzene NCN-pincer ligands.

A novel family of four 1-bromo-2,6-bis{[(λ-phosphanylidene)imino]methyl}benzene ligands has been synthesized and characterized. The phosphiniminomethyl substituents are decorated with either three phenyl groups, two phenyl and one cyclohexyl group, one phenyl and two cyclohexyl groups, or three cyclohexyl groups. Each ligand was metallated using zero-valent nickel through an oxidative addition to form a family of organonickel(II) complexes, namely (2,6-bis{[(triphenyl-λ-phosphanylidene)imino]methyl}phenyl-κN,C,N')bromidonickel(II) dichloromethane hemisolvate, [NiBr(CHNP)]·0.