A Highly Conductive All-Carbon Linked 3D Covalent Organic Framework Film

Yizhou Yang; Suman Mallick; Fernando Izquierdo-Ruiz; Clara Schäfer; Xing Xing; Martin Rahm; Karl Börjesson

doi:10.1002/smll.202103152

A Highly Conductive All-Carbon Linked 3D Covalent Organic Framework Film

Small. 2021 Oct;17(40):e2103152. doi: 10.1002/smll.202103152. Epub 2021 Sep 8.

Authors

Yizhou Yang¹, Suman Mallick¹, Fernando Izquierdo-Ruiz², Clara Schäfer¹, Xing Xing³, Martin Rahm², Karl Börjesson¹

Affiliations

¹ Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, Gothenburg, 41296, Sweden.
² Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, Gothenburg, 41296, Sweden.
³ Research & Development Institute of Northwestern Polytechnical University (Shenzhen), Shenzhen, 518057, China.

PMID: 34494364
DOI: 10.1002/smll.202103152

Abstract

Here an all-carbon linked 3D covalent organic framework (COF) is introduced by employing a templated surface reaction in a continuous flow (TSRCF). The presented method of synthesis provides spatial control over the reaction chemistry and allows for the creation of ultrasmooth COF films of desired thickness and significant crystallinity. The films show high electrical conductivity (≈3.4 S m^-1 ) after being doped with tetracyanoquinodimethane (TCNQ), setting a new record for 3D COF materials. The concurrence of 3D nanosized channels and high conductivity opens up for a number of hitherto unexplored applications for this class of materials, such as high surface area electrodes, electrochemical transistors, and for electronic sensing.

Keywords: 3D networks; all carbon linked structure; conductive films; covalent organic frameworks.

Abstract

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