Berlin 2012 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 8: Poster: Nanoparticles and Composite Materials

CPP 8.19: Poster

Monday, March 26, 2012, 17:30–20:00, Poster A

Synthesis of Semiconductor Nanowires Based on Tubular J-Aggregates Template — •Yan Qiao, Frank Polzer, Holm Kirmse, Egon Steeg, Stefan Kirstein, and Jürgen P. Rabe — Humboldt-Universität zu Berlin, Institut für Physik, Newtonstr. 15, 12489 Berlin, Germany

Organic/inorganic hybrid nanomaterials, that combine the strengths of the individual materials while compensating for deficits, have recently attracted more and more attention. Quasi one-dimensional (1-D) nanomaterials, such as wires and tubes, have been intensively investigated owing to the beneficial influence of dimensionality on electronic and optical properties [1]. Based on former results on silver [2], this work focuses on the fabrication of quasi 1-D organic/inorganic hybrid nanostructures consisting of nanotubular J-aggregates self-assembled from amphiphilic cyanine dyes and filled with semiconductor nanowires such as ZnO. Owing to electrostatic interactions, zinc ions might adsorb at the outer and inner wall of the negatively charge surface of the tubular J-aggregates. Following the procedures of ammonia precipitation and subsequent heating to moderate temperatures, the transformation from zinc ions into ZnO within the hollow space of the tube with diameters less than 10 nanometers is supposed to be realized. The as-synthesized inorganic structures are identified by transmission electron microscopy and UV-Vis spectroscopy.

[1] Y. N. Xia et al., Adv. Mater. 2003, 15, 353.

[2] D. M. Eisele et al., J. Am. Chem. Soc. 2010, 132, 2104.