Zhang Fang, Liu Guowei, Yuan Junjie, Wang Zhengping, Tang Tianhong, Fu Shenggui, Zhang Huanian, Man Zhongsheng, Xing Fei, Xu Xinguang
School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China.
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
Nanoscale. 2020 Mar 19;12(11):6243-6249. doi: 10.1039/c9nr10704e.
With an sp2-hybridized carbon atom structure, graphene is recognized as a nonlinear absorption (NLA) material, which has motivated scientists to explore new allotropes of carbon. Different from graphene, graphdiyne (GDY) consists of sp- and sp2-hybridized carbon atoms. An sp-hybridized carbon-carbon triple bond structure will bring in novel nonlinear optical properties, which are different from other allotropes of carbon. In this study, we investigated the broadband NLA properties (ultraviolet-infrared waveband) of GDY nanosheets, exfoliated using a liquid-phase exfoliation (LPE) method. The short ultraviolet cut-off wavelength (around 200 nm-220 nm) forebodes the potential application of GDY as an ultraviolet optical material. The outstanding NLA resulting in an ultraviolet waveband attests that the GDY nanosheets are veritable ultraviolet NLA materials, which have potential applications in ultraviolet optics. Our study broadens the application scopes of nanomaterials.
由于具有sp2杂化碳原子结构，石墨烯被认为是一种非线性吸收（NLA）材料，这激发了科学家们探索新的碳同素异形体。与石墨烯不同，石墨炔（GDY）由sp和sp2杂化碳原子组成。sp杂化的碳-碳三键结构将带来新颖的非线性光学性质，这与其他碳同素异形体不同。在本研究中，我们研究了通过液相剥离（LPE）方法剥离的GDY纳米片的宽带NLA性质（紫外-红外波段）。短紫外截止波长（约200nm-220nm）预示着GDY作为紫外光学材料的潜在应用。在紫外波段产生的出色NLA证明GDY纳米片是名副其实的紫外NLA材料，在紫外光学领域具有潜在应用。我们的研究拓宽了纳米材料的应用范围。
