Die rutheniumkatalysierte reduktive Kupplung von Paraformaldehyd mit Dienen, Alkinen und Allenen ermöglicht den Zugang zu hydrohydroxymethylierten Produkten, welche so unter Hydroformylierungsbedingungen nicht selektiv zugänglich sind. In speziellen Fällen, unter der Verwendung von Ni‐Katalysatoren, kann die Regioselektivität dieser C‐C‐Kupplung umgedreht werden. Ir‐Katalysatoren ermöglichen mit Methanol eine redoxneutrale, regioselektive Hydrohydroxymethylierung.
The present study aims to formulate a common synthetic strategy for preparing quantum dots (QDs) in a greener way by using combination of popular methods, viz. a colloidal method with suitable capping agent and low molecular weight gel based synthesis. Pyridine dicarboxylic acid (PDC) in presence of AlCl3 forms a stable metallogel, which serves as an excellent medium for selective ZnS QD synthesis. The aromatic pyridine moiety, well known for being a capping agent, indeed plays its part in the run up to QD synthesis. To the best of our knowledge, this is the first example of a metallogel based doped ZnS QD synthesis. Altering the doping material and its composition changes the properties of the QDs, but herein we also tried to establish how these changes affect the gel morphology and stability of both gel and QDs. We further demonstrate, by using live cell confocal microscopy, the delivery of QDs Cu ZnS and MnZnS nanomaterials in the nucleus and the cytoplasm of human breast cancer cells (MCF7), implicating the use of metallogel based QDs for bio-imaging and bio-labeling.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.