title: Synthesis and characterization of multi-helical DNA-silica fibers.
abstract: Multi-helical DNA-silica fibers were synthesised by the self-assembly of DNA molecules with cationic organosilanes and silica sources. By electron microscopy images and circular dichroism spectra, three-level helical structures in the silica fibers have been revealed, i.e. the DNA double-helix, the secondary left-handed DNA packing and the tertiary right-handed twisting.
authors.affiliation: School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Cao
authors.forename: Junjie
authors.initials: J
authors.lastname: Xie
authors.forename: Ben
authors.initials: B
authors.lastname: Liu
authors.forename: Lu
authors.initials: L
authors.lastname: Han
authors.forename: Shunai
authors.initials: S
authors.lastname: Che
mesh_terms: D002942:Circular Dichroism; D004247:DNA / Q000737:chemistry* / Q000648:ultrastructure; D017953:Isocyanates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: C514436:3-isocyanatopropyl trimethoxysilane; D017953:Isocyanates; D012821:Silanes; D012822:Silicon Dioxide; D004247:DNA