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Assembly of nanoparticles into one dimensional structures: wet chemical synthesis of nanotubes

M. Leon, L. Gonzalez, R. Irricary, M.E. Castro
The University of Puerto Rico at Mayaguez, US

Keywords:
nanotubes, nanowires, self assembly, bu functional alkyl thiols, tunneling current

Abstract:
There is considerable interest in the use of self assembly methods for the syntehsis of one and two dimensional nanostructures using nanoparticles as bulding blocks. We report on a wet chemical approach to the synthesis of one dimensional silver nanostructures mediated by a bi functional alkyl thiol. One dimensional nanostructres are characterized by a number of analytical techniques including TEM, SEM, STM, and vibrational spectroscopy measurements. We have found that one dimensional arrangement of tubes can be formed thru hydrogen bonding interactions among the carboxylic acid terminal group of bi-functional alkyl thiols anchored to silver nanoparticle surfaces. Tunneling currents determined from STM measurements are consistent with highly conductive-one dimensional structures, indicated that the tubes have potential applications in molecular electronics.

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