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PRINCIPAL PUBLICATION AND AUTHORS
Elastic films of single-crystal two-dimensional covalent organic frameworks, Y.H. Yang (a), B.K. Liang (c), J. Kreie (d), M. Hambsch (e), Z.H. Liang (a), C. Wang (b, f), S.H. Huang (g), X. Dong (a), L. Gong (h), C.L. Liang (h), D.Y. Lou (i), Z.P. Zhou (a), J.X. Lu (a), Y. Yang (j), X.D. Zhuang (g), H.Y. Qi (c), U. Kaiser (c), S.C.B. Mannsfeld (e), W. Liu (i), A. Gölzhäuser (d), Z.K. Zheng (a,b,f), Nature 630, 878- 883 (2024); https:/doi.org/10.1038/s41586-024-07505-x (a) Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GBRCE for Functional Molecular Engineering, Guangdong Engineering Technology Research Centre for High- performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, IGCME and State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou (China) (b) School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou (China) (c) Central Facility of Electron Microscopy, Electron Microscopy Group of Materials Science, Universität Ulm, Ulm (Germany) (d) Faculty of Physics, Bielefeld University, Bielefeld (Germany) (e) Center for Advancing Electronics Dresden and Faculty of Electrical and Computer Engineering, Dresden University of Technology, Dresden (Germany) (f) Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Jieyang, Guangdong (China) (g) The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai (China) (h) Instrumental Analysis Research Center, Sun Yat-sen University, Guangzhou (China) (i) Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Guangzhou (China) (j) Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou (China)
REFERENCES
[1] K.J. Liu et al., Nat. Chem. 11, 994-1000 (2019). [2] Z.W. Ou et al., J. Am. Chem. Soc. 144, 3233-3241 (2022). [3] Z.P. Zhou et al., Nat. Chem. 15, 841-847 (2023).
Fig. 30: Crystallinity, grain boundary structure, and mechanical properties of 2D COF-1 film. a) Stitched HRTEM image displaying a colour-coded grain orientation map. b) GIWAXS pattern of a 2D COF-1 film synthesized over 18 hours, showcasing high crystallinity. c) Schematic representation of AFM nano-indentation performed on the 2D COF-1 film. d) Force-displacement curves showing 20 cycles of loading (top) and unloading using AFM tips.
