Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 1, Issue 6, Pages 1174-1181Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2tc00449f
Keywords
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Funding
- World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
- Core Research for Evolutional Science and Technology (CREST) program of JST, Japan
- Japan Society for the Promotion of Science (JSPS)
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Olmstead's crystalline C-60-fullerene-Ag(I) organometallic heteronanostructure [C-60{AgNO3}(5)] undergoes an apparently irreversible structural rearrangement upon exposure to low molecular weight aliphatic alcohols leading to a uniquely structured formation of well-oriented fullerene nano/microcrystals ('bucky cubes'). The mechanism of rearrangement represents a supramolecular analogue of topotactic processes more commonly associated with some purely inorganic materials, such as maghemite, where chemical changes can occur with addition or loss of materials. Hence C-60{AgNO3}(5), whose rearrangement occurs at the nano/molecular level (i.e. not atomic scale), undergoes a transformation from a crystalline organometallic complex to well ordered cube-shaped arrays of needle-like fullerene microcrystals which reflect the original cubic crystal morphology and internal structure. Processing of bucky cubes by reduction with hydrazine results in a Ag nanoparticle-C-60 crystal nanocomposite with potential for SERS analyses.
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