期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 3, 期 8, 页码 1393-1401出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b418772e
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To investigate the possibility of incorporating the 1,2-bis(pyridinium)ethane 24C8 [2]pseudorotaxane motif into dendrimer like macromolecules, a series of branched [n]rotaxanes were prepared employing multiple dibenzo-24-membered crown ether wheels with various aromatic core structures and the 1, 2-bis(4,4'-dipyridinium) ethane axle. Yields of branched [2]-, [3]- and [4]rotaxanes were dependent on the size of the core and the relative proximity of the crown ethers arranged around the core unit.
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