Recent Advances on Conductive 2D Covalent Organic Frameworks

• Published in: Small (Weinheim an der Bergstrasse, Germany) Vol. 17; no. 22; pp. e2006043 - n/a
• Main Authors: Bian, Gang, Yin, Jun, Zhu, Jian
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.06.2021
• Subjects: 2D materials; Copolymers; covalent organic frameworks; electronic materials; Energy storage; field‐effect transistors; Graphene; Nanotechnology; Networks; Topology; Transistors; covalent organic frameworks; field-effect transistors; electronic materials; energy storage; 2D materials
• ISSN: 1613-6810; 1613-6829; 1613-6829
• DOI: 10.1002/smll.202006043

As a burgeoning family of crystalline porous copolymers, covalent organic frameworks (COFs) allow precise atomic insertion of organic components in the topology construction to form periodic networks and ordered nanopores. Their 2D networks bear great similarities to graphene analogs, and therefore are essential additions to the 2D family. Here, the electronic properties of conductive 2D‐COFs are reviewed and their bonding strategies and structural characteristics are examined in detail. The controlling approaches toward the morphologies of conductive 2D‐COFs are further explored, followed by a discussion of their applications in field‐effect transistors, photodetectors, sensors, catalysis, and energy storage. Finally, research challenges and forthcoming developments are projected. The resulting survey reveals that the extended porous 2D organic networks with conductive properties will provide great opportunities and essential innovations in various electronics and energy‐related fields. 2D covalent organic frameworks (2D‐COFs) with high intrinsic electrical conductivities, extended conjugated π‐systems, and well‐defined porous networks are important members of the 2D materials family. This review highlights the topology and morphology controls of conductive 2D‐COFs, and outlines their applications in field‐effect transistors, photodetectors, sensors, catalysis, and energy storage.