Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/6303
Title: | Arrays of Aligned Supramolecular Wires by Macroscopic Orientation of Columnar Discotic Mesophases | Authors: | Duran, Hatice Hartmann, Azanza Brigitte Steinhart, Martin Gehrig, Dominik Laquai, Frederic Feng, Xinliang Floudas, George |
Keywords: | discotic liquid crystals confinement nanoporous aluminum oxide supramolecular wires |
Publisher: | Amer Chemical Soc | Abstract: | Structure formation, phase behavior, and dynamics of mono-bromo hexa-peri-hexabenzocoronene (HBC-Br) are strongly affected by the confinement of cylindrical nanopores with rigid walls. Using self-ordered nanoporous anodic aluminum oxide (AAO)-containing arrays of aligned nanopores with narrow size distribution as a-confining matrix, pronounced alignment of the HBC-Br columns along the nanopore axes was found to be independent of-the pore diameter. Hence, arrays of one-dimensional supramolecular HBC-Br wires with the columns uniformly oriented along the wire axes on a macroscopic:scale were. obtained, unlike with discotics bearing smaller-cores: The formation of the crystalline herringbone Structure Is shifted to lower temperatures in nanopores with diameters,cif,of a few hundred nanometers, whereas the formation of this low temperature phase is completely suppressed when the pore diameter Is below 20 lattice parameters. Moreover, the cylindrical confinement affects the disk axial dynamics-as well as the distribution of relaxation times. | URI: | https://doi.org/10.1021/nn302937t https://hdl.handle.net/20.500.11851/6303 |
ISSN: | 1936-0851 1936-086X |
Appears in Collections: | Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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