title: Random-graft polymer-directed synthesis of inorganic mesostructures with ultrathin frameworks.
abstract: A widely employed route for synthesizing mesostructured materials is the use of surfactant micelles or amphiphilic block copolymers as structure-directing agents. A versatile synthesis method is described for mesostructured materials composed of ultrathin inorganic frameworks using amorphous linear-chain polymers functionalized with a random distribution of side groups that can participate in inorganic crystallization. Tight binding of the side groups with inorganic species enforces strain in the polymer backbones, limiting the crystallization to the ultrathin micellar scale. This method is demonstrated for a variety of materials, such as hierarchically nanoporous zeolites, their aluminophosphate analogue, TiO2 nanosheets of sub-nanometer thickness, and mesoporous TiO2, SnO2, and ZrO2. This polymer-directed synthesis is expected to widen our accessibility to unexplored mesostructured materials in a simple and mass-producible manner.
authors.affiliation: Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea).
authors.forename: Changbum
authors.initials: C
authors.lastname: Jo
authors.forename: Yongbeom
authors.initials: Y
authors.lastname: Seo
authors.forename: Kanghee
authors.initials: K
authors.lastname: Cho
authors.forename: Jaeheon
authors.initials: J
authors.lastname: Kim
authors.forename: Hye Sun
authors.initials: HS
authors.lastname: Shin
authors.forename: Munhee
authors.initials: M
authors.lastname: Lee
authors.forename: Jeong-Chul
authors.initials: JC
authors.lastname: Kim
authors.forename: Sang Ouk
authors.initials: SO
authors.lastname: Kim
authors.forename: Jeong Yong
authors.initials: JY
authors.lastname: Lee
authors.forename: Hyotcherl
authors.initials: H
authors.lastname: Ihee
authors.forename: Ryong
authors.initials: R
authors.lastname: Ryoo
keywords: mesostructures; nanosheets; nanosponges; polymers; structure directing agents