Synthetic And Self-assembly Of Dopamine-containing Copolymer

With the need of new materials on our society, polymer as one of soft matter hasbeen paid much attention nowadays. Surface Modification by polymer is an importantway to improve the surface performance of materials and broaden the application ofmaterials. Depending on the substrates to be modified, different anchoring chemistrieshave been established, such as thiols, silanes, and phosph(on)ates. In general, thesemethods have limitation. Recently, inspired by the composition of adhesive proteins inmussels, the dopamine has been used to functionalize a wide array of materials surface.However, the well-designed polymerizations of dopamine-containing monomers withpredetermined chemical compositions were very difficult to be controlled attributed toeasily oxidation reaction of catechol group. We use two different methods toovercome this phenomenon.Dopamine-containing monomer, N-3,4-dihydroxybenzenethyl methacrylamide(DMA) and dimethylaminoethyl methacrylate (DMAEMA) were successfullycopolymerized in a well-controlled manner via ambient temperature single electrontransfer initiation and propagation through the radical addition fragmentation chaintransfer method. Moreover, biomimetic self-assembly of poly(N-3,4-dihydroxybenzenethyl methacrylamide-co-dimethylaminoethyl methacrylate) PDMA-co-PDMAEMA and inorganic particles were employed to prepare tunablehoneycomb-like porous hybrid particles (HPHPs) by regulating the predesigned chemical composition. In addition, the honeycomb-like organic porous nanoparticlecan be successfully obtained by selective etching inorganic particles.In order to synthetic Dopamine-Containing polymer with temperature response,N-3,4-dihydroxybenzenethyl methacrylamide (DMA) and N-Isopropylacrylamide(NIPAAM) were successfully copolymerized, but the polymereasy assembly into nanoparticals because of catechol functional groups are easy to beoxidation. Silyl protection is shown to be critical for the oxidative stability ofcatechols, so this method can overcome the instability. The protected eugenol and N-Isopropylacrylamide successfully copolymerized by the traditional free radicalpolymerization method. Then we successfully obtained the copolymer not onlycontaining catechols but also have temperature response. Temperature responsivesurface of silicon wafer was prepared by this dopamine-containing copolymer. Thenthe patterned surface of temperature responsive was successfully prepared by microcontact printing technology.