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Programmable Multicomponent Self‐Assembly Based on Aromatic Amino Acids
Advanced Materials ( IF 29.4 ) Pub Date : 2018-10-09 , DOI: 10.1002/adma.201805175
Pengyao Xing 1 , Soo Zeng Fiona Phua 1 , Xuan Wei 1 , Yanli Zhao 1, 2
Affiliation  

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 C3‐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, C3‐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 α‐position of amino acids.

中文翻译:

基于芳族氨基酸的可编程多组分自组装

由于具有固有的系统复杂性和多样化的竞争途径,因此由两个或多个有机构建单元构建具有顺序结构的集成自组装成为当前的挑战。在这里,据报道,主要由氢键相互作用驱动的芳香族氨基酸构建单元可以掺入二或三组分共组装中,而无需金属-配体和基于大环的主体-客体之间的相互作用。关键策略是采用具有交替氢键键合的供体/受体位点的C 3对称分子,该位点能够结合羧酸或吡啶附加的构建单元。芳香族氨基酸,C 3对称化合物和联吡啶单元构成一个独特的三元相互结合系统,揭示了包括两个成对结构和一个三元组合的三个共组装途径,分别导致了具有顺序结构的两组分和三组分自组装。途径的复杂性在于芳香族氨基酸的结构参数,可以通过控制氨基酸的α位上的取代基进行编程。
更新日期:2018-10-09
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