title: Direct Assembly of Mesoporous Silica Functionalized with Polypeptides for Efficient Dye Adsorption.
abstract: Herein, we introduce a new polypeptide-functionalized mesoporous silica template fabricated from a biodegradable poly(ethylene oxide-b-ɛ-caprolactone) (PEO-b-PCL) diblock copolymer and a poly(tyrosine) (PTyr) biopolymer. The crystallization behavior of the PEO-b-PCL diblock copolymer changes after blending, but the secondary structure of PTry remains stable. After selective solvent extraction in THF, the PEO-b-PCL is removed, but PTyr remains within the silica matrix due to its different solubility. Fourier-transform IR spectroscopic analysis (FTIR), thermal gravitometry analysis (TGA), small-angle X-ray scattering (SAXS), and X-ray diffraction (XRD) studies confirm the retention of PTyr to form a polypeptide-functionalized mesoporous material. The adsorption of methylene blue hydrate (MB) from aqueous solution into the polypeptide-functionalized mesoporous silica is investigated, thus revealing that the nanocomposite exhibits a high adsorption capacity relative to pure silica due to hydrogen-bonding interactions between the hydroxy phenolic group of PTyr and the N-containing aromatic ring from MB.
authors.affiliation: Materials and Optoelectronic Science, National Sun Yat-Sen University, Center for Nanoscience and Nanotechnology, Kaohsiung, 804, Taiwan.|World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Yi-Syuan
authors.initials: YS
authors.lastname: Lu
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Bishnu Prasad
authors.initials: BP
authors.lastname: Bastakoti
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Malay
authors.initials: M
authors.lastname: Pramanik
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Victor
authors.initials: V
authors.lastname: Malgras
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan. yamauchi.yusuke@nims.go.jp.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamauchi
authors.affiliation: Materials and Optoelectronic Science, National Sun Yat-Sen University, Center for Nanoscience and Nanotechnology, Kaohsiung, 804, Taiwan. kuosw@faculty.nsysu.edu.tw.
authors.forename: Shiao-Wei
authors.initials: SW
authors.lastname: Kuo
mesh_terms: D000327:Adsorption; D004396:Coloring Agents / Q000737:chemistry*; D006860:Hydrogen Bonding; D007783:Lactones / Q000737:chemistry*; D010455:Peptides / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D004396:Coloring Agents; D007783:Lactones; D010455:Peptides; D011108:Polymers; C473831:poly(ethylene oxide)-b-poly(caprolactone); D011092:Polyethylene Glycols; D012822:Silicon Dioxide
keywords: mesoporous materials; organic-inorganic hybrid composites; polypeptides; silica