Abstract
The liquid crystalline behavior of graphene oxide (GO) has enabled the design of facile and effective solution processing methods for assembling highly ordered macroscopic graphene structures, further expanding the development of novel graphene‐based devices. In this progress report, first the preparation of liquid crystalline graphene oxide (LCGO) with a particular emphasis on different approaches to improve the oxidation efficiency and to control the GO sheet size is discussed. Then the use of LCGO dispersions in the solution processing of 1D, 2D and 3D architectures with highly tailored microstructures is covered. The LCGO composites are also reviewed as an important part of novel graphene‐based multi‐functional materials. Finally, various applications of LCGO are discussed to highlight the critical role of LCGO in expanding the applications of graphene. Based on these systematic discussions, an outlook on the future directions, challenges, and opportunities in this field is provided.
Highlights
Graphene, the wonder material of 21st century with a unique combination of remarkable mechanical, thermal, electrical, and electrochemical properties, has summoned an enormous attention for use in diverse range of macroscopic assemblies with novel functionalities.[1,2,3,4,5] The advances in graphene synthesis and processing in the past decade have enabled the fabrication of graphene-based fibers (1D), coatings, papers, and films (2D), as well as aerogels, hydrogels, foams, and sponges (3D)
This section focuses on the recent progress in solution processing of graphene to a wide range of assemblies, i.e., fibers (1D), coatings, papers, and films (2D), as well as aerogels, hydrogels, foams, and sponges (3D), and highlights the advantages offered by liquid crystalline graphene oxide (LCGO)
Based on the recent progress on LCGO, here we highlight some of the opportunities that arise from the challenges in this field
Summary
The wonder material of 21st century with a unique combination of remarkable mechanical, thermal, electrical, and electrochemical properties, has summoned an enormous attention for use in diverse range of macroscopic assemblies with novel functionalities.[1,2,3,4,5] The advances in graphene synthesis and processing in the past decade have enabled the fabrication of graphene-based fibers (1D), coatings, papers, and films (2D), as well as aerogels, hydrogels, foams, and sponges (3D) Such diverse arrays of structures have catered for a wide range of applications from energy storage to tissue engineering. We discuss our opinion on the knowledge gaps and the opportunities that these gaps create to further advance this important and exciting field
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