Low-dimensional, hinged bar-code metal oxide layers and free-standing, ordered organic nanostructures from turbostratic vanadium oxide.
Both low-dimensional bar-coded metal oxide layers, which exhibit molecular hinging, and free-standing organic nanostructures can be obtained from unique nanofibers of vanadium oxide (VO(x)). The nanofibers are successfully synthesized by a simple chemical route using an ethanolic solution of vanadium pentoxide xerogel and dodecanethiol resulting in a double bilayered laminar turbostratic structure. The formation of vanadium oxide nanofibers is observed after hydrothermal treatment of the thiol-intercalated xerogel, resulting in typical lengths in the range 2-6 microm and widths of about 50-500 nm. We observe concomitant hinging of the flexible nanofiber lamina at periodic hinge points in the final product on both the nanoscale and molecular level. Bar-coded nanofibers comprise alternating segments of organic-inorganic (thiols-VO(x)) material and are amenable to segmented, localized metal nanoparticle docking. Under certain conditions free-standing bilayered organic nanostructures are realized.
Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland. colm.odwyer@ul.ieu
Colm
C
O'Dwyer
Vladimir
V
Lavayen
David
D
Fuenzalida
Harold
H
Lozano
Maria A
MA
Santa Ana
Eglantina
E
Benavente
Guillermo
G
González
Clivia M
CM
Sotomayor Torres
D015392:Chemistry, Inorganic / Q000379:methods; D002625:Chemistry, Organic / Q000379:methods; D003460:Crystallization; D004563:Electrochemistry / Q000379:methods; D005782:Gels; D007364:Intercalating Agents / Q000494:pharmacology; D053768:Metal Nanoparticles / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D009930:Organic Chemicals; D010087:Oxides / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014639:Vanadium / Q000737:chemistry*; D014961:X-Ray Diffraction
D005782:Gels; D007364:Intercalating Agents; D009930:Organic Chemicals; D010087:Oxides; D014639:Vanadium