title: Virus-Templated Near-Amorphous Iron Oxide Nanotubes.
abstract: We present a simple synthesis of iron oxide nanotubes, grown under very mild conditions from a solution containing Fe(II) and Fe(III), on rod-shaped tobacco mosaic virus templates. Their well-defined shape and surface chemistry suggest that these robust bionanoparticles are a versatile platform for synthesis of small, thin mineral tubes, which was achieved efficiently. Various characterization tools were used to explore the iron oxide in detail: Electron microscopy (SEM, TEM), magnetometry (SQUID-VSM), diffraction (XRD, TEM-SAED), electron spectroscopies (EELS, EDX, XPS), and X-ray absorption (XANES with EXAFS analysis). They allowed determination of the structure, crystallinity, magnetic properties, and composition of the tubes. The protein surface of the viral templates was crucial to nucleate iron oxide, exhibiting analogies to biomineralization in natural compartments such as ferritin cages.
authors.affiliation: CIC nanoGUNE Consolider, E-20018, Donostia-San Sebastián, Spain.|Heddle IRU, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Chemistry, University of Hull , HU6 7RX, Hull, United Kingdom.
authors.forename: Sachin N
authors.initials: SN
authors.lastname: Shah
authors.affiliation: CIC nanoGUNE Consolider, E-20018, Donostia-San Sebastián, Spain.|Department of Biosciences, COMSATS Institute of Information Technology , Park Road, Chak Shehzad, 44000 Islamabad, Pakistan.
authors.forename: Abid A
authors.initials: AA
authors.lastname: Khan
authors.affiliation: Instituto de Ciencia de Materiales de Madrid (ICMM) Consejo Superior de Investigaciones Científicas, c/Sor Juana Inés de la Cruz 3, Cantoblanco, 28049, Madrid, Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Espinosa
authors.affiliation: Instituto de Ceramica y Vidrio - CSIC, and Instituto de Magnetismo Aplicado "Salvador Velayos" UCM_ADIF, 28049, Madrid, Spain.
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Garcia
authors.affiliation: CIC nanoGUNE Consolider, E-20018, Donostia-San Sebastián, Spain.
authors.forename: Wiwat
authors.initials: W
authors.lastname: Nuansing
authors.affiliation: CIC biomaGUNE, E-20009, Donostia-San Sebastián, Spain.
authors.forename: Mariana
authors.initials: M
authors.lastname: Ungureanu
authors.affiliation: Heddle IRU, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Malopolska Centre of Biotechnology, Jagiellonian University , Gronostajowa 7, 30-387, Krakow, Poland.
authors.forename: Jonathan G
authors.initials: JG
authors.lastname: Heddle
authors.affiliation: CIC nanoGUNE Consolider, E-20018, Donostia-San Sebastián, Spain.|Ikerbasque, Basque Foundation for Science, E-48013, Bilbao, Spain.
authors.forename: Andrey L
authors.initials: AL
authors.lastname: Chuvilin
authors.affiliation: University of Stuttgart , Institute of Biomaterials and Biomolecular Systems, Pfaffenwaldring 57, D-70569 Stuttgart, Germany.
authors.forename: Christina
authors.initials: C
authors.lastname: Wege
authors.affiliation: CIC nanoGUNE Consolider, E-20018, Donostia-San Sebastián, Spain.|Ikerbasque, Basque Foundation for Science, E-48013, Bilbao, Spain.
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Bittner
mesh_terms: D005290:Ferric Compounds / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D014027:Tobacco Mosaic Virus / Q000737:chemistry* / Q000648:ultrastructure
chemical_list: D005290:Ferric Compounds; C000499:ferric oxide