title: Assembly of tobacco mosaic virus into fibrous and macroscopic bundled arrays mediated by surface aniline polymerization.
abstract: One-dimensional (1D) polyaniline/tobacco mosaic virus (TMV) composite nanofibers and macroscopic bundles of such fibers were generated via a self-assembly process of TMV assisted by in-situ polymerization of polyaniline on the surface of TMV. At near-neutral reaction pH, branched polyaniline formed on the surface of TMV preventing lateral association. Therefore, long 1D nanofibers were observed with high aspect ratios and excellent processibility. At a lower pH, transmission electron microscopy (TEM) analysis revealed that initially long nanofibers were formed which resulted in bundled structures upon long-time reaction, presumably mediated by the hydrophobic interaction because of the polyaniline on the surface of TMV. In-situ time-resolved small-angle X-ray scattering study of TMV at different reaction conditions supported this mechanism. This novel strategy to assemble TMV into 1D and 3D supramolecular composites could be utilized in the fabrication of advanced materials for potential applications including electronics, optics, sensing, and biomedical engineering.
authors.affiliation: Department of Chemistry and Biochemistry and Nanocenter, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, USA.
authors.forename: Zhongwei
authors.initials: Z
authors.lastname: Niu
authors.forename: Michael A
authors.initials: MA
authors.lastname: Bruckman
authors.forename: Siqi
authors.initials: S
authors.lastname: Li
authors.forename: L Andrew
authors.initials: LA
authors.lastname: Lee
authors.forename: Byeongdu
authors.initials: B
authors.lastname: Lee
authors.forename: Sai Venkatesh
authors.initials: SV
authors.lastname: Pingali
authors.forename: P
authors.initials: P
authors.lastname: Thiyagarajan
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry; D000814:Aniline Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D013499:Surface Properties; D014027:Tobacco Mosaic Virus / Q000737:chemistry* / Q000648:ultrastructure
chemical_list: D000538:Aluminum Silicates; D000814:Aniline Compounds; C416807:polyaniline; C011934:mica