Self-assembled polyphenylene dendrimer nanofibers on highly oriented pyrolytic graphite studied by atomic force microscopy

Liu, DJ; De Feyter, Steven; Grim, Kees; Vosch, Tom; Grebel-Koehler, D; Wiesler, UM; Berresheim, AJ; Mullen, K; De Schryver, Frans

doi:10.1021/la020425u

Self-assembled polyphenylene dendrimer nanofibers on highly oriented pyrolytic graphite studied by atomic force microscopy

Author:

Liu, DJ

De Feyter, Steven ; Grim, Kees ; Vosch, Tom ; Grebel-Koehler, D ; Wiesler, UM ; Berresheim, AJ ; Mullen, K ; De Schryver, Frans

Keywords:

spherical supramolecular dendrimers, scanning probe lithography, structural-analysis, mixed-monolayers, side-groups, chemistry, shape, gold, interfaces, nanostructures, Science & Technology, Physical Sciences, Technology, Chemistry, Multidisciplinary, Chemistry, Physical, Materials Science, Multidisciplinary, Chemistry, Materials Science, CORE-SHELL TECTO(DENDRIMERS), SUPRAMOLECULAR DENDRIMERS, STRUCTURAL-ANALYSIS, MIXED-MONOLAYERS, MOLECULES, SHAPE, MONODENDRONS, CHEMISTRY, LIBRARIES, POLYMERS, Chemical Physics

Abstract:

Self-assembled nanostructures of various polyphenylene dendrimers, prepared by drop casting dendrimer solutions on the surface of highly oriented pyrolytic graphite (HOPG), have been investigated by noncontact atomic force microscopy (NCAFM). Besides forming globular clusters, all the polyphenylene dendrimers studied self-assemble into micrometer long nanofibers irrespective of their cores (e.g., tetraphenylmethane, biphenyl, or azobenzene). The effect of the dendrimer generation and the degree of branching on the formation of dendrimer nanofibers is studied.