title: Rational design of crystalline supermicroporous covalent organic frameworks with triangular topologies.
abstract: Covalent organic frameworks (COFs) are an emerging class of highly ordered porous polymers with many potential applications. They are currently designed and synthesized through hexagonal and tetragonal topologies, limiting the access to and exploration of new structures and properties. Here, we report that a triangular topology can be developed for the rational design and synthesis of a new class of COFs. The triangular topology features small pore sizes down to 12 Å, which is among the smallest pores for COFs reported to date, and high π-column densities of up to 0.25 nm(-2), which exceeds those of supramolecular columnar π-arrays and other COF materials. These crystalline COFs facilitate π-cloud delocalization and are highly conductive, with a hole mobility that is among the highest reported for COFs and polygraphitic ensembles.
authors.affiliation: Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan.
authors.forename: Sasanka
authors.initials: S
authors.lastname: Dalapati
authors.affiliation: Department of Chemistry, WPI-Research Initiative Institute of Transformative Bio-Molecules, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan.
authors.forename: Matthew
authors.initials: M
authors.lastname: Addicoat
authors.affiliation: Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan.
authors.forename: Shangbin
authors.initials: S
authors.lastname: Jin
authors.affiliation: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, A4 Kyoto University Katsura Campus, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Tsuneaki
authors.initials: T
authors.lastname: Sakurai
authors.affiliation: Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan.
authors.forename: Jia
authors.initials: J
authors.lastname: Gao
authors.affiliation: Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan.
authors.forename: Hong
authors.initials: H
authors.lastname: Xu
authors.affiliation: Department of Chemistry, WPI-Research Initiative Institute of Transformative Bio-Molecules, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan.
authors.forename: Stephan
authors.initials: S
authors.lastname: Irle
authors.affiliation: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, A4 Kyoto University Katsura Campus, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Shu
authors.identifier: 0000000178514405
authors.initials: S
authors.lastname: Seki
authors.affiliation: Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan.
authors.forename: Donglin
authors.initials: D
authors.lastname: Jiang