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A Highly‐Ordered 3D Covalent Fullerene Framework
Author(s) -
Minar Norma K.,
Hou Kun,
Westermeier Christian,
Döblinger Markus,
Schuster Jörg,
Hanusch Fabian C.,
Nickel Bert,
Ozin Geoffrey A.,
Bein Thomas
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201411344
Subject(s) - fullerene , materials science , covalent bond , orthorhombic crystal system , copolymer , small angle x ray scattering , covalent organic framework , crystallography , polymer , scattering , crystal structure , chemistry , organic chemistry , composite material , optics , physics
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.