title: Stratified polymer brushes from microcontact printing of polydopamine initiator on polymer brush surfaces.
abstract: Stratified polymer brushes are fabricated using microcontact printing (μCP) of initiator integrated polydopamine (PDOPBr) on polymer brush surfaces and the following surface initiated atom transfer radical polymerization (SI-ATRP). It is found that the surface energy, chemically active groups, and the antifouling ability of the polymer brushes affect transfer efficiency and adhesive stability of the polydopamine film. The stickiness of the PDOPBr pattern on polymer brush surfaces is stable enough to perform continuous μCP and SI-ATRP to prepare stratified polymer brushes with a 3D topography, which have broad applications in cell and protein patterning, biosensors, and hybrid surfaces.
authors.affiliation: State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China; University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Qiangbing
authors.initials: Q
authors.lastname: Wei
authors.forename: Bo
authors.initials: B
authors.lastname: Yu
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Wang
authors.forename: Feng
authors.initials: F
authors.lastname: Zhou
mesh_terms: D015374:Biosensing Techniques; D007211:Indoles / Q000737:chemistry*; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D011506:Proteins / Q000737:chemistry / Q000378:metabolism; D012821:Silanes / Q000737:chemistry; D013499:Surface Properties
chemical_list: D007211:Indoles; D011108:Polymers; D011506:Proteins; D012821:Silanes; C568283:polydopamine
keywords: 3D polymer brush; SI-ATRP; adhesion; microcontact printing; polydopamine