Dalapati Sasanka, Addicoat Matthew, Jin Shangbin, Sakurai Tsuneaki, Gao Jia, Xu Hong, Irle Stephan, Seki Shu, Jiang Donglin
Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan.
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.
Nat Commun. 2015 Jul 16;6:7786. doi: 10.1038/ncomms8786.
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.
共价有机框架（COFs）是一类新兴的高度有序的多孔聚合物，具有许多潜在应用。目前它们是通过六边形和四边形拓扑结构设计和合成的，这限制了新结构和性质的获取与探索。在此，我们报告可以开发一种三角形拓扑结构用于合理设计和合成一类新型COFs。该三角形拓扑结构具有低至12 Å的小孔径，这是迄今为止报道的COFs中最小的孔径之一，以及高达0.25 nm⁻²的高π柱密度，超过了超分子柱状π阵列和其他COF材料。这些结晶性COFs促进了π电子云离域，并且具有高导电性，其空穴迁移率在报道的COFs和多石墨聚集体中处于最高水平。
Zotero 插件
