title: Comparative Study on Surface-Initiated ATRP and SI-ARGET ATRP of Oligo(Ethylene Glycol) Methacrylate on Gold.
abstract: Oligo(ethylene glycol) methacrylate (OEGMA) was polymerized from a polymerization initiator-presenting gold substrate by Activator ReGenerated by Electron Transfer Atom Transfer Radical Polymerization (ARGET ATRP) in water. Compared with the normal surface-initiated ATRP (SI-ATRP), SI-ARGET ATRP of OEGMA proceeded smoothly in the presence of air with L-ascorbic acid as a reducing agent and a CuBr2/2,2'-bipyridyl complex at the ppm level. In addition, SI-ARGET ATRP did not require the additional steps for removing a polymerization inhibitor from the OEGMA monomer and for deoxygenating the solvent. The ellipsometric measurements showed that the polymerized OEGMA (pOEGMA) films prepared by SI-ARGET ATRP were on average 10 times thicker than those prepared by normal SI-ATRP with the same monomer concentration and polymerization time.
authors.forename: Bong Soo
authors.initials: BS
authors.lastname: Lee
authors.forename: Ji Yup
authors.initials: JY
authors.lastname: Kim
authors.forename: Ji Hun
authors.initials: JH
authors.lastname: Park
authors.forename: Woo Kyung
authors.initials: WK
authors.lastname: Cho
authors.forename: Insung S
authors.initials: IS
authors.lastname: Choi
mesh_terms: D006046:Gold / Q000737:chemistry*; D008689:Methacrylates / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D058105:Polymerization; D013499:Surface Properties
chemical_list: D008689:Methacrylates; D011092:Polyethylene Glycols; D006046:Gold