Amphiphilic Graphene Composites
Amphiphilic Graphene Composites
复制标题
两亲性石墨烯复合材料
DOI：
10.1002/anie.201004497
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发表时间：
2010-01-01
影响因子：
16.6
通讯作者：
Zhang, Hua
中科院分区：
文献类型：
--
作者：
Qi, Xiaoying;Pu, Kan-Yi;Zhang, Hua
石墨烯基材料因其优异的物理性能而受到越来越多的关注。[1]这种材料在微电子和纳米电子器件中的应用不仅需要保持石墨烯的固有电性能，而且还要求它们可以容易地并入并均匀地分布到各种基质中。[2]因此，石墨烯基材料在不同溶剂中具有足够的溶解性是其进一步实际应用的前提。[3]目前，石墨烯的功能化被广泛用于改善其稳定性，[4]例如化学修饰[5]和共价[6]或非共价功能化。[4，7]在这些方法中，以π-π相互作用作为石墨烯和稳定剂之间的结合力的石墨烯的非共价官能化是最有效和非破坏性的方法，其能够在不改变石墨烯的化学结构的情况下改变材料性质。[8]然而，每种类型的官能化石墨烯片只能分散在某些溶剂中，因为改性石墨烯的物理性质是亲脂性或亲水性的，但不是两者兼而有之。[9]到目前为止，可以溶解在具有低极性的有机溶剂（例如甲苯和氯仿）和具有高极性的水混溶性溶剂（例如乙醇、甲醇）两者中的两亲性石墨烯片很少被探索。[二]《中国日报》
Graphene-based materials are attracting increasing attention because of their excellent and intriguing physical properties.[1] Applications of such materials in micro-and nanoelectronic devices not only require the preserved intrinsic electrical properties of graphene, but also demand that they can be easily incorporated and homogeneously distributed into various matrices.[2] Therefore, sufficient solubility of graphene-based materials in different solvents is a prerequisite for their further practical applications.[3] Currently, functionalization of graphene is widely used to improve its dispersibility,[4] such as chemical modifications,[5] and covalent [6] or non-covalent functionalizations.[4, 7] Among these methods, non-covalent functionalization of graphene with π–π interactions as the binding force between graphene and stabilizers is the most effective and nondestructive method, which enables the modification of material properties without altering the chemical structure of graphene.[8] However, each type of functionalized graphene sheets can only be dispersed in certain solvents, as the physical property of the modified graphene is either lipophilic or hydrophilic, but not both.[9] Until now, amphiphilic graphene sheets that can be dissolved in both organic solvents with low polarity (for example toluene and chloroform) and water-miscible solvents with high polarity (such as ethanol, methanol) have rarely been explored.[2]