Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent, name: N1-(2-(Dimethylamino)ethyl)-N1,N2,N2-trimethylethane-1,2-diamine, Which mentioned a new discovery about 3030-47-5
Well-defined functional block copolymers, poly(butyl methacrylate)-b-poly(glycidyl methacrylate) (PBMA-b-PGMA), were successfully synthesized via initiators for continuous activator regeneration atom transfer radical polymerization (ICAR ATRP) with pentamethyldiethylene-triamine (PMDETA) as a ligand and copper bromide (CuBr2) as a catalyst with concentration of 500 ppm. The PBMA-b-PGMA grafted with titanium dioxide (TiO2) nanoparticles was obtained through the reaction between the epoxide on the PGMA segment and amine group on the surface of modified TiO2 nanoparticles. Results showed that the PBMA-b-PGMA block copolymer with about same length of PBMA and PGMA segment could get highest graft ratio and about 17%wt TiO2 nanoparticles were successfully grafted onto the PBMA-b-PGMA block copolymer. The sizes of the PBMA-b-PGMA grafted nanoparticles were about 74 nm in ethyl acetate. The PBMA-b-PGMA grafted TiO2 nanoparticles showed very good dispensability in organic solvent (e.g. ethyl acetate) and polymer matrix. Poly(methyl methacrylate) (PMMA) containing 0.5%wt PBMA-b-PGMA grafted TiO2 nanoparticles showed strong absorption at about 300 nm and good transparency in visible region, which was attributed to good dispensability of PBMA-b-PGMA grafted TiO2 nanoparticles in PMMA matrix.
I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 3030-47-5, help many people in the next few years.name: N1-(2-(Dimethylamino)ethyl)-N1,N2,N2-trimethylethane-1,2-diamine
Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI