A Review on Graphene Oxide Two-dimensional Macromolecules: from Single Molecules to Macro-assembly

作     者：Wen-Zhang Fang Li Peng Ying-Jun Liu Fang Wang Zhen Xu Chao Gao Wen-Zhang Fang;Li Peng;Ying-Jun Liu;Fang Wang;Zhen Xu;Chao Gao

作者机构：Ministry of Education Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2021年第39卷第3期

页      面：267-308,I0004页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Key R&D Program of China (No. 2016YFA0200200) the National Natural Science Foundation of China (Nos. 51533008, 51703194,51873191, and 21805242) Hundred Talents Program of Zhejiang University (No. 188020*194231701/113) Key Research and Development Plan of Zhejiang Province (No. 2018C01049) Fujian Provincial Science and Technology Major Projects (No.2018HZ0001-2) Key Laboratory of Novel Adsorption and Separation Materials and Application Technology of Zhejiang Province (No. 512301-I21502) 

主　　题：Graphene 2D macromolecules Macro-assembly 

摘      要：Graphene oxide(GO), which consists of two-dimensional(2 D) sp^(2) carbon hexagonal networks and oxygen-contained functional groups, has laid the foundation of mass production and applications of graphene materials. Made by chemical oxidation of graphite, GO is highly dispersible or even solubilized in water and polar organic solvents, which resolves the hard problem of graphene processing and opens a door to wet-processing of graphene. Despite its defects, GO is easy to functionalize, dope, punch holes, cut into pieces, conduct chemical reduction, form lyotropic liquid crystal, and assemble into macroscopic materials with tunable structures and properties as a living building block. GO sheet has been viewed as a single molecule, a particle, as well as a soft polymer material. An overview on GO as a 2 D macromolecule is essential for studying its intrinsic properties and guiding the development of relevant subjects. This review mainly focuses on recent advances of GO sheets, from single macromolecular behavior to macro-assembled graphene material properties. The first part of this review offers a brief introduction to the synthesis of GO molecules. Then the chemical structure and physical properties of GO are presented, as well as its polarity in solvent and rheology behavior. Several key parameters governing the ultimate stability of GO colloidal behavior, including size, p H and the presence of cation in aqueous dispersions, are highlighted. Furthermore, the discovery of GO liquid crystal and functionalization of GO molecules have built solid new foundations of preparing highly ordered, architecture-tunable, macro-assembled graphene materials, including 1 D graphene fibers, 2 D graphene films, and 3 D graphene architectures. The GO-based composites are also viewed and the interactions between these target materials and GO are carefully discussed. Finally, an outlook is provided in this field, where GO is regarded as macromolecules, pointing out the challenges and o