title: Construction and characterization of molecular nonwoven fabrics consisting of cross-linked poly(γ-methyl-L-glutamate).
abstract: Molecular nonwoven fabrics in the form of ultrathin layer-by-layer (LbL) helical polymer films with covalent cross-linking were assembled on substrates by an alternate ester-amide exchange reaction between poly(γ-methyl L-glutamate) (PMLG) and cross-linking agent ethylene diamine or 4,4'-diamino azobenzene. The regular growth of helical monolayers without excessive adsorption and the formation of amide bonds were confirmed by ultraviolet-visible (UV-vis) spectrophotometry, quartz crystal microbalance (QCM), ellipsometry, and infrared reflection-absorption spectroscopy (IR-RAS) measurements. Nanostructures with high uniformity and ultrathin films with few defects formed by helical rod segments of PMLG were characterized by atomic force microscopy (AFM) and Kelvin probe force microscopy (KFM).
authors.affiliation: Graduate School of Science and Technology, Kumamoto University, Chuo-ku, Kumamoto, Japan.
authors.forename: Rintaro
authors.initials: R
authors.lastname: Higuchi
authors.forename: Megumi
authors.initials: M
authors.lastname: Hirano
authors.forename: Md
authors.initials: M
authors.lastname: Ashaduzzaman
authors.forename: Neval
authors.initials: N
authors.lastname: Yilmaz
authors.forename: Tatsunori
authors.initials: T
authors.lastname: Sumino
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kodama
authors.forename: Sayuri
authors.initials: S
authors.lastname: Chiba
authors.forename: Shinobu
authors.initials: S
authors.lastname: Uemura
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Nishiyama
authors.forename: Akihiro
authors.initials: A
authors.lastname: Ohira
authors.forename: Michiya
authors.initials: M
authors.lastname: Fujiki
authors.forename: Masashi
authors.initials: M
authors.lastname: Kunitake
mesh_terms: D003432:Cross-Linking Reagents / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D011099:Polyglutamic Acid / Q000031:analogs & derivatives* / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
chemical_list: D003432:Cross-Linking Reagents; C030315:poly-gamma-methylglutamate; D011099:Polyglutamic Acid