O'Dwyer Colm, Lavayen Vladimir, Fuenzalida David, Lozano Harold, Santa Ana Maria A, Benavente Eglantina, González Guillermo, Sotomayor Torres Clivia M
Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland.
Small. 2008 Jul;4(7):990-1000. doi: 10.1002/smll.200701014.
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.
具有分子铰链特性的低维条形码金属氧化物层和独立的有机纳米结构都可以从独特的氧化钒（VO(x)）纳米纤维中获得。通过使用五氧化二钒干凝胶的乙醇溶液和十二烷硫醇，通过简单的化学路线成功合成了纳米纤维，形成了双双层层状乱层结构。在对硫醇插层干凝胶进行水热处理后，观察到氧化钒纳米纤维的形成，其典型长度在2至6微米范围内，宽度约为50至500纳米。我们在最终产物的纳米级和分子水平上的周期性铰链点处观察到了柔性纳米纤维薄片的伴随铰链现象。条形码纳米纤维由有机-无机（硫醇-VO(x)）材料的交替段组成，适合进行分段、局部金属纳米颗粒对接。在某些条件下，可以实现独立的双层有机纳米结构。
