期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 139, 期 46, 页码 16732-16740出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b08642
关键词
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资金
- Canada Foundation for Innovation under Compute Canada
- Government of Ontario, Ontario Research Fund - Research Excellence
- University of Toronto
- Australian Research Council [DE170101170]
- Canada Research Chair
- NSERC
- Sichuan province
- Government of China
- Australian Research Council [DE170101170] Funding Source: Australian Research Council
Achieving precise control of molecular self-assembly to form designed three-dimensional (3D) structures is a major goal in nanoscale science and technology. Using scanning tunnelling microscopy and density functional theory calculations, we show that a 2D covalent organic framework (COF-1) can template solution-processed C-60 guest molecules to form several solvent-dependent structural arrangements and morphologies via a 2D to 3D growth process. When 1,2,4-tricholorobenzene is used as solvent, C-60 molecules form a template-defined close-packed structure. When heptanoic acid is used as solvent, a range of lower density architectures that deviate from the template-defined close packing are observed. We attribute this difference to the co-adsorption of the heptanoic acid solvent molecules, which is only achieved in the presence of the template. This work demonstrates the possibility to precisely control 3D molecular self-assembly through the synergistic combination of template and solvent effects.
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