Room-temperature single-step synthesis of nanoparticle-decorated nanotubes

Nanotubes Self-Assembled from Amphiphilic Molecules via Helical Intermediates

“…In many instances, where lipid tubes are used as encapsulation vessels, greater mechanical strength, chemical resistance, and thermal stability are required, and this can be readily provided by templating the self-assembled nanotube surfaces with inorganic materials. ,,, Such organized deposition of inorganics unable to self-assemble on their own is significant ,,, as materials templated in this way can have new applications as diverse as use in hydrogen storage and as a heterogeneous catalyst supports. , An important aspect of template directed synthesis using self-assembled nanotubes is the templating of metals and semiconductor components for the microelectronics industry. ,,,,,,,,,,,, Potential components here range from nanowires, semiconductor transistors, magnetic data recording media, and vacuum field emission cathodes , to the more complex electro-mechanical devices, such as solenoids and pumps that could be derived from helices. ,, Helical deposition of materials also provides other opportunities and applications, for instance, not only in asymmetric reaction catalysts , and in selective separations, ,,,, but also as helical sensors, optical materials, , and platforms to elucidate the 3-D structure of proteins. ,,,, …”

“…These gels consist of twisted or helical ribbons that fuse into three-dimensional networks, which have many biomedical applications, including the controlled delivery of hydrophobic drugs (Table 3). 301 Hydrogel forming lipids have been synthesized from D-amygdalin linked through an ester group to 3 (77), 13 (78), and 17 (79) carbon saturated hydrophobic tails (Chart 27). 301 These molecules readily selfassembled into organized tilted bilayers when dispersed in water.…”

“…253 In many instances, where lipid tubes are used as encapsulation vessels, greater mechanical strength, chemical resistance, and thermal stability are required, and this can be readily provided by templating the self-assembled nanotube surfaces with inorganic materials. 33,78,91,360 Such organized deposition of inorganics unable to self-assemble on their own is significant 63,78,91,252 as materials templated in this way can have new applications as diverse as use in hydrogen storage 460 and as a heterogeneous catalyst supports. 458,459 An important aspect of template directed synthesis using self-assembled nanotubes is the templating of metals and semiconductor components for the microelectronics industry.…”

“…These characteristics complement their suitability for many of the applications already mentioned, such as use in biosensors and in drug delivery. ,,− As distinct from other nanostructures with similar aspect ratios, such as carbon nanotubes, lipid nanotubes can be synthesized with a range of internal diameters, from 10 to 1000 nm, ,,− and have hydrophilic surfaces with a range of available surface functionalities. ,,,,− Further, chemical modification postassembly can provide external nanotube chemistries that are not themselves able to support self-assembly into nanotubes . This flexibility in size and chemistry provides further applications specific to lipid nanotubes including use in micro fluidic networks, , in molecular recognition devices, and as liquid-crystalline biomaterials. , Furthermore, lipid nanotubes have been shown to act as ideal templates for synthesizing useful structures from materials that otherwise do not self-assemble. ,,− The tubes can also be used in combination with other materials as nanocomposites. ,,,,− …”

Effects of the Counter Ion Valency on the Colloidal Interaction between Two Cylindrical Particles

“…[1][2][3] Various methods such as soft and hard templating methods and controlled epitaxial growth have been developed to synthesize nanorods and nanotubes. [4][5][6][7] However, not only the synthesis but the manipulation of synthesized nanorods and nanotubes are required for the practical application. For the manipulation of these cylindrical particles, the analysis on the interaction between these particles is required, which has been of keen interest in colloid science.…”