Tang Senxuan, Liu Zhihan, Xiang Xu
School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing, 400074 People's Republic of China.
Carbon Lett (Korean Carbon Soc). 2022;32(6):1395-1410. doi: 10.1007/s42823-022-00402-1. Epub 2022 Sep 12.
For graphene oxide (GO) composite hydrogels, a two-dimensional GO material is introduced into them, whose special structure is used to improve their properties. GO contains abundant oxygen-containing functional groups, which can improve the mechanical properties of hydrogels and support the application needs. Especially, the unique-conjugated structure of GO can endow or enhance the stimulation response of hydrogels. Therefore, GO composite hydrogels have a great potential in the field of wearable devices. We referred to the works published in recent years, and reviewed from these aspects: (a) structure of GO; (b) factors affecting the mechanical properties of the composite hydrogel, including hydrogen bond, ionic bond, coordination bond and physical crosslinking; (c) stimuli and signals; (d) challenges. Finally, we summarized the research progress of GO composite hydrogels in the field of wearable devices, and put forward some prospects.
对于氧化石墨烯（GO）复合水凝胶，二维GO材料被引入其中，利用其特殊结构来改善水凝胶的性能。GO含有丰富的含氧官能团，可改善水凝胶的力学性能并满足应用需求。特别是，GO独特的共轭结构能够赋予或增强水凝胶的刺激响应性。因此，GO复合水凝胶在可穿戴设备领域具有巨大潜力。我们参考了近年来发表的相关研究，从以下几个方面进行了综述：（a）GO的结构；（b）影响复合水凝胶力学性能的因素，包括氢键、离子键、配位键和物理交联；（c）刺激与信号；（d）挑战。最后，我们总结了GO复合水凝胶在可穿戴设备领域的研究进展，并提出了一些展望。
