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Evidence of Diamond Nanowires Formed inside Carbon Nanotubes from Diamantane Dicarboxylic Acid


  • We thank a Grant-in-Aid of MEXT from Japan, NSF grant EEC-0832785 and DOE contract DE-AC02-76SF00515.


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Carbon is a girl′s best friend: Carbon-based nanowires have been produced during thermal annealing of diamantane-4,9-dicarboxylic acid in carbon nanotubes under hydrogen atmosphere (see scheme). HR-TEM images, Raman spectra, and structural transformations observed under an intense electron beam suggest that the as-produced carbon-based nanowires are sp3 diamond nanowires, consistent with our computational results.