title: Hydrophilic composite elastomeric mold for high-resolution soft lithography.
abstract: Here, we introduce a nanopatternable hydrophilic composite elastomer highly desirable for both nanostructure patterning via solvent-assisted micromolding (SAMIM) and microcontact printing of polar inks. This composite precursor is prepared by blending two UV-curable materials, Norland Optical Adhesives (NOA) 63 and poly(ethylene glycol) diacrylate (PEGDA), in an appropriate ratio; upon UV polymerization, a nanopatternable elastomer with preferential permeability both to aqueous and organic solvent is fabricated. Using this composite mold, nanoscale SAMIM of poly(4-vinylpyridine) (P4VP) and microcontact printing of a polar biomolecule, bovine serum albumin (BSA), was successfully demonstrated, paving the way for facile and efficient reproduction of various nanopatterns and a biomolecule-printed array platform.
authors.affiliation: Center for Intelligent Nano-Bio Materials, Ewha Womans University, Seodaemun-gu, Seoul, 120-750, Korea.
authors.forename: Nae Yoon
authors.initials: NY
authors.lastname: Lee
authors.forename: Ju Ri
authors.initials: JR
authors.lastname: Lim
authors.forename: Min Jung
authors.initials: MJ
authors.lastname: Lee
authors.forename: Jong Bok
authors.initials: JB
authors.lastname: Kim
authors.forename: Sung Jin
authors.initials: SJ
authors.lastname: Jo
authors.forename: Hong Koo
authors.initials: HK
authors.lastname: Baik
authors.forename: Youn Sang
authors.initials: YS
authors.lastname: Kim
mesh_terms: D020724:Elastomers; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D011092:Polyethylene Glycols / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D020724:Elastomers; D011108:Polymers; C036925:elastomeric polymer; C437167:poly(ethylene glycol)diacrylate; D014867:Water; D011092:Polyethylene Glycols