期刊
CHEMICAL SCIENCE
卷 5, 期 3, 页码 1221-1226出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3sc52965g
关键词
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资金
- Research Enhancement Program of Texas State University
- Welch Foundation [AI-0045]
- REU from NSF [CHE-1156579]
- NSFC/China [21102135, 21132005, 91027005]
- SMSTC [13JC1402200]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1156579] Funding Source: National Science Foundation
Self-assembly of three-dimensional (3-D) architecture using terpyridine (tpy)-based building blocks is challenging and seldom addressed due the fixed geometry (around 180 degrees) of tpy-M(II)-tpy (M = Ru, Fe, Zn, and Cd) connectivity. Here we describe the self-assembly of 3-D giant metallo-supramolecular cubes using three-armed terpyridine ligands constructed on adamantane with molecular weight up to 18 k and edge length at similar to 4.9 nm, which is significantly larger than the sizes of previous metallo-supramolecular cubes. Instead of using metal center as vertices in the commonly used synthetic strategy of 3-D molecular coordination ensembles, these cages [M12L8] bear 8 ligands as vertices with 12 metal ions on the edges. With a suitable edge length, the giant cubes appear to be the sole product after self-assembly from a variety of possible architectures. The 3-D metallo-supramolecules were characterized and supported by NMR, DOSY, ESI-MS, travelling wave ion mobility-MS and AFM.
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