title: Oriented Chiral DNA-Silica Film Guided by a Natural Mica Substrate.
abstract: The formation of highly ordered chiral organic/inorganic films with high density and long-range orientation is important in constructing chiral devices, such as broadband polarization devices, liquid-crystal displays, or negative-reflection materials. A feasible strategy is presented to fabricate three-dimensional mesostructured chiral DNA-silica assemblies into large-scale oriented arrangements. The highly ordered film was aligned by a mica crystal substrate with the bridging effect of suitable divalent metal ions, followed by the growth of the DNA-silica composite by bottom-up assembly with a "quartet templating" method. This simple and effective route would perform well in the alignment and arrangement of highly charged biomolecules, such as polypeptides, proteins, viruses, and their inorganic assemblies, and furthermore could allow the fabrication of chiral optical materials with long-range ordering.
authors.affiliation: School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Cao
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
authors.forename: Kunche
authors.initials: K
authors.lastname: Kao
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
authors.forename: Chungyuan
authors.initials: C
authors.lastname: Mou
authors.affiliation: School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China. luhan@sjtu.edu.cn.
authors.forename: Lu
authors.initials: L
authors.lastname: Han
authors.affiliation: School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China. chesa@sjtu.edu.cn.
authors.forename: Shunai
authors.initials: S
authors.lastname: Che
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D008670:Metals / Q000737:chemistry; D010316:Particle Size; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D000538:Aluminum Silicates; D008670:Metals; D012822:Silicon Dioxide; D004247:DNA; C011934:mica
keywords: DNA self-assembly; chiral films; controllable orientation; mesoporous films; mica