Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 49: Oxide and Insulator Surfaces: Adsorption
O 49.1: Poster
Dienstag, 21. März 2017, 18:30–20:30, P1A
Synthesis of conjugated organic nanowires on the TiO2(110) surface — •Jens Brede1,2, Mikel Abadia1, Marek Kolmer3, Guillaume Vasseur1,2, Łukasz Zajac3, Alberto Verdini4, Luca Floreano4, Jose Enrique Ortega1,2,5, and Celia Rogero1,2 — 1Centro de Física de Materiales CFM–MPC(CSiC-UPV/EHU), Paseo Manuel Lardizabal 5, E-20018 San Sebastián, Spain — 2Donostia International Physics Center, Paseo Manuel Lardizabal 4, E-20018 San Sebastián, Spain — 3Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University Łojasiewicza 11, 30-348 Kraków (Poland) — 4CNR-IOM, Laboratorio Nazionale TASC, I-34149 Trieste, Italy — 5Departamento Física Aplicada I, Universidad del País Vasco, E-20018 San Sebastián, Spain
We have recently demonstrated the synthesis of poly(p-phenylene) nanowires from dibromoterphenyl precursors on the reduced TiO2(110) surfacea. Here, we summarize our findings and present new data were we used X-ray photoelectron spectroscopy to correlate the behavior of surface anchored hydroxyl groups with changes in the C 1s and Br 3d core levels as a function of annealing temperature. Thus, we obtained clear evidence for the proton-transfer mediated dehalogenation reaction as proposed by Kolmer et al.b In a second experiment we deposited trace amounts of different metals together with the molecular precursors and found highly uniform and ordered arrays of nanowires covering the entire surface. a JACS 138, 5685-5692 (2016) b Kolmer et al. Angew. Chem. Int. Ed. 52, 10300-10303 (2013)