[EN] METAL-BASED CORE NANOPARTICLES, SYNTHESIS AND USE<br/>[FR] NANOPARTICULES DE NOYAUX À BASE DE MÉTAL, SYNTHÈSE ET UTILISATION
申请人:SEINBERG LIIS
公开号:WO2021144006A1
公开(公告)日:2021-07-22
The present invention relates to a nanoparticle comprising a metal-based core, a first coating layer substantially covering the metal-based core to generate a coated metal-based core, and a second coating layer at least partially covering the coated metal-based core, wherein the metal-based core comprises at least one transition metal, and wherein the metal-based core comprises the at least one transition metal substantially in a state of zero oxidation. The present invention also relates to a method for synthesizing such nanoparticle, the method comprising the steps of: (i) preparing a metal oxide nanoparticle comprising a metal oxide with a chemical structure represented as MnOmbH2O (ii) coating the metal oxide nanoparticle with a first coating layer substantially covering the metal oxide nanoparticle with a layer comprising a first compound to generate a coated metal oxide nanoparticle, (iii) reducing the coated metal oxide nanoparticle with a suitable reducing agent, and (iv) coating the coated metal-based core nanoparticle with a second coating layer partially covering the coated metal-based core nanoparticle with a compound comprising at least one moiety to obtain a double-coated metal-based core nanoparticle.
Amines and amine derivatives that improve the buffering range, and/or reduce the chelation and other negative interactions of the buffer and the system to be buffered. The reaction of amines or polyamines with various molecules to form polyamines with differing pKa's will extend the buffering range, derivatives that result in polyamines that have the same pKa yields a greater buffering capacity. Derivatives that result in zwitterionic buffers improve yield by allowing a greater range of stability.
Amines and amine derivatives that improve the buffering range, and/or reduce the chelation and other negative interactions of the buffer and the system to be buffered. The reaction of amines or polyamines with various molecules to form polyamines with differing pKa's will extend the buffering range, derivatives that result in polyamines that have the same pKa yields a greater buffering capacity. Derivatives that result in zwitterionic buffers improve yield by allowing a greater range of stability.