Berlin 2005 – wissenschaftliches Programm
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O: Oberflächenphysik
O 53: Organische Dünnschichten V
O 53.7: Vortrag
Mittwoch, 9. März 2005, 12:15–12:30, TU EB420
Functionalized para-phenylene nanofibers — •Frank Balzer1, Katharina Al-Shamery2, Arne Luetzen2, Manuela Schiek2, Ralf Frese3, and Horst-Günter Rubahn3 — 1Humboldt-Universität zu Berlin, Institut für Physik / ASP — 2University of Oldenburg, Institute of Pure and Applied Chemistry, Oldenburg — 3SDU Odense, Fysisk Institut, Denmark
Growth of mutually aligned, several tens to hundreds of µm long organic nanofibers from functionalized molecules has been demonstrated for the first time. The fibers from 4,4’’’-Dimethoxy-1,1’:4’,1’’:4’’,1’’’-quaterphenyl (MOP4) are grown on mica by vacuum sublimation and they resemble more the well organized growth of long para-hexaphenyl (p-6P) nanofibers as compared to the rather unorganized growth of short para-quaterphenyl (p-4P) aggregates. Atomic force microscopy reveals typical heights of the MOP4 nanofibers of a few ten nanometers and typical widths of a few hundred nanometers. The MOP4 fibers show intense, polarized blue light emission with well resolved higher order vibronic peaks and a morphology that is slightly different from that of p-6P nanofibers.