期刊
FARADAY DISCUSSIONS
卷 204, 期 -, 页码 111-121出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7fd00088j
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资金
- Hong Kong RGC [16303514]
- National Natural Science Foundation of China [21172069, 21372072, 21190033]
- Science Fund for Creative Research Groups [21421004]
Designingmetal-organic frameworks with new topologies is a long-standing quest because new topologies often accompany new properties and functions. Here we report that 1,3,5-tris[4-(pyridin-4-yl)phenyl]benzene molecules coordinate with Cu atoms to form a two-dimensional framework in which Cu adatoms form a nanometer-scale demi-regular lattice. The lattice is articulated by perfectly arranged twofold and threefold pyridyl-Cu coordination motifs in a ratio of 1 : 6 and features local dodecagonal symmetry. This structure is thermodynamically robust and emerges solely when the molecular density is at a critical value. In comparison, we present three framework structures that consist of semi-regular and regular lattices of Cu atoms self-assembled out of 1,3,5-tris[4-(pyridin-4-yl)phenyl]benzene and trispyridylbenzene molecules. Thus a family of regular, semi-regular and demi-regular lattices can be achieved by Cu-pyridyl coordination.
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