National Creative Research Initiative Centre for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science & Engineering, KAIST, Daejeon 34141, Republic of Korea.
Chem Soc Rev. 2018 Aug 13;47(16):6013-6045. doi: 10.1039/c8cs00299a.
Graphene, despite being the best known strong and electrical/thermal conductive material, has found limited success in practical applications, mostly due to difficulties in the formation of desired large-scale highly organized structures. Our discovery of a liquid crystalline phase formation in graphene oxide dispersion has enabled a broad spectrum of highly aligned graphene-based structures, including films, fibers, membranes, and mesoscale structures. In this review, the current understanding of the structure-property relationship of graphene oxide liquid crystals (GOLCs) is overviewed. Various synthetic methods and parameters that can be optimized for GOLC phase formation are highlighted. Along with the results from different characterization methods for the identification of the GOLC phases, the typical characteristics of different types of GOLC phases introduced so far, including nematic, lamellar and chiral phases, are carefully discussed. Finally, various interesting applications of GOLCs are outlined together with the future prospects for their further developments.
石墨烯作为最知名的高强度和导电/导热材料，在实际应用中取得的成功有限，主要是因为难以形成所需的大规模高组织化结构。我们发现氧化石墨烯分散体中存在液晶相形成，这使得一系列高度取向的基于石墨烯的结构得以实现，包括薄膜、纤维、膜和介观结构。在这篇综述中，综述了氧化石墨烯液晶（GOLC）的结构-性能关系的现有理解。强调了可用于优化 GOLC 相形成的各种合成方法和参数。除了不同表征方法的结果，用于鉴定 GOLC 相的结果，还仔细讨论了迄今为止引入的不同类型 GOLC 相的典型特征，包括向列相、层状相和手性相。最后，概述了 GOLC 的各种有趣应用，并对其进一步发展的前景进行了展望。
