AFM analysis of C 60 and a poly(amido amine) dendrimer-C 60 nanoconjugate

Minghui Chai, Anton W. Jensen, Hosam G. Abdelhady, Donald A. Tomalia

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Atomic force microscopy (AFM) was used to study the nanoscopic structure and topography of buck-minsterfullerene (C 60) and a conjugate of C 60 with generation four, amine-terminated, poly(amido amine) dendrimer (PAMAM-G4). The conjugate contains a PAMAM-G4 core and C 60 shell formed by reacting PAMAM-G4 with an excess of C 60. 1 Fractal patterns of C 60 were observed in nanoscopic AFM images when solutions of different concentrations of C 60 in pyridine or toluene were dried at room temperature. In contrast, no fractal patterns were detected in the AFM images of the dendrimer-C 60 nanoconjugate, prepared from pyridine solution in a similar manner. Thus, the C 60-shell alone is not sufficient to impart the same fractal patterns on the conjugate.

Original languageEnglish
Pages (from-to)1401-1405
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Issue number4-5
StatePublished - Apr 2007


  • Buckminsterfullerene
  • Dendrimer
  • Fractal pattern
  • Nanoconjugate


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