A Highly‐Ordered 3D Covalent Fullerene Framework |
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| Authors: | Norma K Minar Dr Kun Hou Christian Westermeier Dr Markus Döblinger Dr Jörg Schuster Fabian C Hanusch Dr Bert Nickel Prof?Dr Geoffrey A Ozin Prof?Dr Thomas Bein |
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| Institution: | 1. Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU), Butenandtstrasse 5–13, 81377 Munich (Germany);2. Department of Physics and Center for NanoScience (CeNS), University of Munich (LMU), Geschwister‐Scholl‐Platz 1, 80539 Munich (Germany);3. Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, M5S 3H6 (Canada) |
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| Abstract: | A highly‐ordered 3D covalent fullerene framework is presented with a structure based on octahedrally functionalized fullerene building blocks in which every fullerene is separated from the next by six functional groups and whose mesoporosity is controlled by cooperative self‐assembly with a liquid‐crystalline block copolymer. The new fullerene‐framework material was obtained in the form of supported films by spin coating the synthesis solution directly on glass or silicon substrates, followed by a heat treatment. The fullerene building blocks coassemble with a liquid‐crystalline block copolymer to produce a highly ordered covalent fullerene framework with orthorhombic Fmmm symmetry, accessible 7.5 nm pores, and high surface area, as revealed by gas adsorption, NMR spectroscopy, small‐angle X‐ray scattering (SAXS), and TEM. We also note that the 3D covalent fullerene framework exhibits a dielectric constant significantly lower than that of the nonporous precursor material. |
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| Keywords: | covalent frameworks electron mobility fullerenes mesoporous materials self‐assembly |
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