6380-71-8Relevant academic research and scientific papers
Synthesis of InP/ZnS Nanocrystals and Phase Transfer by Hydrolysis of Ester
Lübkemann, Franziska,Gusenburger, Timo C.,Hinrichs, Dominik,Himstedt, Rasmus,Dorfs, Dirk,Bigall, Nadja C.
, p. 55 - 67 (2019)
The synthesis of highly luminescent non-toxic nanocrystals (NCs) and the subsequent phase transfer to aqueous solution by hydrolysis of the crystal-bound ester are presented. Therefore, the synthesis of the spherical semiconductor system InP/ZnS was modified by changing the sulfur precursor in the synthesis from 1-dodecanethiol to dodecyl 3-mercaptopropionate (D3MP). By employing D3MP both as sulfur precursor for the ZnS shell growth and as stabilizing ligand, the phase transfer from organic to aqueous solution can be performed easily. Instead of the usually employed ligand exchange with mercaptopropionic acid, the NCs are only shaken with a sodium borate buffer in order to obtain aqueous soluble NCs by hydrolysis of the ester. In future work, the NCs must be protected against aggregation and the long term stability has to be increased. The optical properties of the samples are investigated by UV/Vis and photoluminescence spectroscopy, and the morphology of the nanoparticles (NPs) before and after phase transfer is determined by transmission electron microscopy.
Macrocyclic derivative and assemblies formed therefrom
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Page/Page column 21, (2014/10/16)
The present invention is directed to a macrocyclic derivative which is formed by modification of a macrocycle. The invention further relates to assemblies formed by the self-assembly of such macrocyclic derivatives in aqueous solvent, and includes bilayer vesicles, micelles, monolayers, nanoparticles, colloidal assemblies and surface-coated assemblies.
Poly-6-cationic amphiphilic cyclodextrins designed for gene delivery
Byrne, Colin,Sallas, Florence,Rai, Dilip K.,Ogier, Julien,Darcy, Raphael
experimental part, p. 3763 - 3771 (2009/10/23)
A new series of amphiphilic cyclodextrins containing cationic groups at the 6-positions and alkyl or biolabile ester groups at the 2-positions has been synthesised. Selective 2-O-allylation followed by photochemical addition of lipophilic thiols made it possible to control lipophilicity in these mesomolecules and allow solubility and self-assembly in water. The cationic groups are cysteamine-derived, while the alkyl and ester groups are C 1-C16 and benzyl ester groups. This is a new general synthetic route to a potentially wide range of polycationic cyclodextrins capable of acting as gene delivery vectors by condensing DNA and forming liquid crystalline complexes with oligonucleotides.
