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Nano Research 2018, 11(3): 1714-1721 https://doi.org/10.1007/s12274-017-1789-7
Research Article | Issue | Published: 02 February 2018

Direct imaging and determination of the crystal structure of six-layered graphdiyne

Show Author's Information Chao Li1,§,  Xiuli Lu1,§,  Yingying Han1,  Shangfeng Tang1,  Yi Ding1,  Ruirui Liu1,  Haihong Bao1,  Yuliang Li2,  Jun Luo1( ),  Tongbu Lu1( )
Center for Electron MicroscopyTUT-FEI Joint LaboratoryTianjin Key Laboratory of Advanced Porous Functional MaterialsInstitute for New Energy Materials & Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin300384China
Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China

§ Chao Li and Xiuli Lu contributed equally to this work.

Keywords:
crystal structure, few-layer graphdiyne, low-voltage transmission electron microscopy
Cite this article:
Li C, Lu X, Han Y, et al. Direct imaging and determination of the crystal structure of six-layered graphdiyne. Nano Research, 2018, 11(3): 1714-1721. https://doi.org/10.1007/s12274-017-1789-7
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Abstract Full text Electronic supplementary material About this article

Since its discovery, the direct imaging and determination of the crystal structure of few-layer graphdiyne has proven difficult because it is too delicate under irradiation by an electron beam. In this work, the crystal structure of a six-layered graphdiyne nanosheet was directly observed by low-voltage transmission electron microscopy (TEM) using low current density. The combined use of high-resolution TEM (HRTEM) simulation, electron energy-loss spectroscopy, and electron diffraction revealed that the as-synthesized nanosheet was crystalline graphdiyne with a thickness of 2.19 nm (corresponding to a thickness of six layers) and showed ABC stacking. Thus, this work provides direct evidence for the existence and crystal structure of few-layer graphdiyne, which is a new type of two-dimensional carbon material complementary to graphene.


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Electronic supplementary material
About this article

Direct imaging and determination of the crystal structure of six-layered graphdiyne

Show Author's information Chao Li1,§, Xiuli Lu1,§, Yingying Han1, Shangfeng Tang1, Yi Ding1, Ruirui Liu1, Haihong Bao1, Yuliang Li2, Jun Luo1( ), Tongbu Lu1( )
Center for Electron MicroscopyTUT-FEI Joint LaboratoryTianjin Key Laboratory of Advanced Porous Functional MaterialsInstitute for New Energy Materials & Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin300384China
Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China

§ Chao Li and Xiuli Lu contributed equally to this work.

Abstract

Since its discovery, the direct imaging and determination of the crystal structure of few-layer graphdiyne has proven difficult because it is too delicate under irradiation by an electron beam. In this work, the crystal structure of a six-layered graphdiyne nanosheet was directly observed by low-voltage transmission electron microscopy (TEM) using low current density. The combined use of high-resolution TEM (HRTEM) simulation, electron energy-loss spectroscopy, and electron diffraction revealed that the as-synthesized nanosheet was crystalline graphdiyne with a thickness of 2.19 nm (corresponding to a thickness of six layers) and showed ABC stacking. Thus, this work provides direct evidence for the existence and crystal structure of few-layer graphdiyne, which is a new type of two-dimensional carbon material complementary to graphene.

Keywords: crystal structure, few-layer graphdiyne, low-voltage transmission electron microscopy

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Publication history
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Acknowledgements

Publication history

Received: 27 May 2017
Revised: 24 July 2017
Accepted: 03 August 2017
Published: 02 February 2018
Issue date: March 2018

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany 2017

Acknowledgements

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Nos. 11604241, 21790052 and 21331007), the National Program for Thousand Young Talents of China, the Postdoctoral Science Foundation of China (No. 2015M580209), the Tianjin Municipal Education Commission, the Tianjin Municipal Science and Technology Commission (No. 15JCYBJC52600), and the Fundamental Research Fund of Tianjin University of Technology.

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