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Programmable Multicomponent Self-Assembly Based on Aromatic Amino Acids
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DOI：10.1002/adma.201805175.png)
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Construction of integrated self-assembly with ordered structures from two or more organic building blocks is currently a challenge, since it suffers from intrinsic systematic complexity and diverse competitive pathways. Here, it is reported that aromatic amino acid building units can be incorporated into two-or three-component coassembly driven primarily by hydrogen bonding interactions without the assistance of metal-ligand and macrocycle-based host-guest interactions. The key strategy is to employ a C-3-symmetric molecule with alternative hydrogen bonding donor/acceptor sites that are able to bind either carboxylic acid or pyridine appended building units. Aromatic amino acids, C-3-symmetric compound, and bipyridine unit constitute a unique ternary mutual binding system, where three coassembly pathways including two pairwise formations and one ternary combination are unveiled, giving rise to two-and three-component self-assemblies with ordered structures, respectively. The pathway complexity lies in the structural parameter of aromatic amino acids, which can be programmable by controlling substituents at the alpha-position of amino acids.
Keyword:
aromatic amino acids
hydrogen bonding
multicomponent self-assembly
superchirality
ternary coassembly
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26.8
论文数:
3.5W
被引数:
46.0W
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