title: Preparation and characterization of imogolite/DNA hybrid hydrogels.
abstract: Imogolite is one of the clay minerals contained in volcanic ash soils. The novel hybrid hydrogels were prepared from imogolite nanofibers and DNA by utilizing strong interaction between the aluminol groups on imogolite surface and phosphate groups of DNA. The hybrid hydrogels of imogolite and DNA were prepared in various feed ratios, and their physicochemical properties and molecular aggregation states were investigated in both dispersion and gel states. The maximum DNA content in the hybrid gels was shown in equivalent molar ratio of imogolite and DNA. The physical properties of the hybrid gels were changed by varying DNA blend ratios. In the dispersion state, the hybrid gels showed a fibrous structure of imogolite, whereas a continuous network structure was observed in pure imogolite, indicating that the hybrid with DNA enhanced the dispersion of imogolite. In the gel state, DNA and imogolite nanofibers formed a 3D network structure.
authors.affiliation: Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Nattha
authors.initials: N
authors.lastname: Jiravanichanun
authors.forename: Kazuya
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Kenichi
authors.initials: K
authors.lastname: Kato
authors.forename: Jungeun
authors.initials: J
authors.lastname: Kim
authors.forename: Shin
authors.initials: S
authors.lastname: Horiuchi
authors.forename: Weng-On
authors.initials: WO
authors.lastname: Yah
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Otsuka
authors.forename: Atsushi
authors.initials: A
authors.lastname: Takahara
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D000077215:Clay; D004247:DNA / Q000737:chemistry*; D020100:Hydrogels / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure*
chemical_list: D000538:Aluminum Silicates; D020100:Hydrogels; D004247:DNA; D000077215:Clay