Nanoparticle organic hybrid materials (NOHMs) and compositions and uses of NOHMs

摘要

A nanoparticle organic hybrid material (NOHM) containing an organic polymeric corona having a molecular weight in a range of 100-50,000 g/mol, wherein the organic polymeric corona is covalently attached to an inorganic nanoparticle core, wherein the NOHM exhibits liquid-like properties so that the NOHM moves freely and flows in a manner so that when the NOHM is in a container, the NOHM takes the shape of the container, and wherein the NOHM has a volume fraction (fc) of the inorganic particle ranging from about 0.05 to 0.75, methods of making the NOHMs, and compositions containing the NOHMs.

主权项

1. A composition comprising:
a) a plurality of organic-hybrid silica nanoparticles, the individual nanoparticles comprising a silica core and an organic polymeric corona comprising amphiphilic polymer chains having at least one alkyl amino moiety, the alkyl moiety of the alkyl amino moiety having 2 to 18 carbon atoms, with a molecular weight of 100 g/mol to 50,000 g/mol, the individual amphiphilic polymer chains of the organic polymeric corona covalently bonded to the silica core; and b) a carrier selected from a hydrogenated organic poly(α-olefin) oligomer (PAO), a fatty acid, and combinations thereof, wherein the organic-hybrid silica nanoparticles are dispersed in the carrier and do not exhibit observable aggregation and/or phase separation.