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单壁碳纳米管可看作是由石墨烯沿一定方向卷曲而成的空心圆柱体,根据卷曲方式(通常称为“手性”)的不同,可以是金属性导体或带隙不同的半导体。这是碳纳米管的一个独特而优异的性质,但也为碳纳米管的制备带来了巨大的挑战。用一般方法合成的样品均为不同结构的碳纳米管组成的混合物,单一手性单壁碳纳米管的选择性生长成为一个难题,经过国际上20余年的努力仍悬而未决,这已经成为碳纳米管研究和应用发展的瓶颈。针对这一难题,北京大学化学与分子工程学院李彦
Single-walled carbon nanotubes can be seen as a hollow cylinder curled from graphene in a certain direction. Depending on the type of curling (commonly referred to as “chirality”), a single-walled carbon nanotube may be a metallic conductor or a different bandgap semiconductor. This is a unique and excellent property of carbon nanotubes, but it also poses a huge challenge for the preparation of carbon nanotubes. The samples synthesized by the general methods are all mixtures of carbon nanotubes with different structures. The selective growth of single-walled single-walled carbon nanotubes has become a challenge. After more than 20 years of international efforts, it has become an unavoidable problem that carbon nanotubes Research and application development bottlenecks. In response to this problem, Peking University School of Chemistry and Molecular Engineering Li Yan