Rational design of crystalline supermicroporous covalent organic frameworks with triangular topologies

Sasanka Dalapati, Matthew Addicoat, Shangbin Jin, Tsuneaki Sakurai, Jia Gao, Hong Xu, Stephan Irle, Shu Seki, Donglin Jiang

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274 Scopus citations

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 12Å, which is among the smallest pores for COFs reported to date, and high π-column densities of up to 0.25nm-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.

Original languageEnglish
Article number7786
JournalNature Communications
Volume6
DOIs
StatePublished - Jul 16 2015
Externally publishedYes

Funding

This work was supported by a Grant-in-Aid for Scientific Research (A) (24245030) from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT). S.D. acknowledges the IMS research fellowship and is currently an International Research Fellow of the Japan Society for the Promotion of Science (JSPS).

FundersFunder number
Japan Society for the Promotion of Science15F15040, 24245030
Ministry of Education, Culture, Sports, Science and Technology

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