title: Janus ultrathin film from multi-level self-assembly at air-water interfaces.
abstract: Ultrathin free-standing Janus films were fabricated at air-water interfaces using azopyridine derivatives and poly(acrylic acid) via multi-level self-assembly on molecular and microscopic scales, which showed distinct asymmetric water wetting abilities on different surfaces.
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University, P. R. China. yuhaifeng@pku.edu.cn.
authors.forename: Hongbin
authors.initials: H
authors.lastname: Zhang
authors.forename: Rui
authors.initials: R
authors.lastname: Hao
authors.forename: John K
authors.initials: JK
authors.lastname: Jackson
authors.forename: Mu
authors.initials: M
authors.lastname: Chiao
authors.forename: Haifeng
authors.initials: H
authors.lastname: Yu
mesh_terms: D000388:Air; D006868:Hydrolysis; D008958:Models, Molecular; D008968:Molecular Conformation; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D012822:Silicon Dioxide