Supramolecular Polymers Formed by ABC Miktoarm Star Peptides.

Supramolecular Polymers Formed by ABC Miktoarm Star Peptides.
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DOI:
10.1021/mz400535g
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发表时间:
2013-12-17
期刊:
影响因子:
7.015
通讯作者:
Cui H
Cui H
中科院分区:
化学1区
文献类型:
--
作者:
Lin YA;Ou YC;Cheetham AG;Cui H

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我们在这里报告的设计和合成的ABC miktoarm星星肽连接通过赖氨酸交界处的短肽序列和两个疏水性,但不混溶的块(烃和氟碳化合物)。所设计的分子可以自组装成一维纳米结构,在水溶液中具有多种动力学演变形态,而仅包含两个疏水嵌段之一的分子形成结构相似的细丝。我们认为,丰富的组装行为和形态演变是作为氟碳化合物和烃链段的不相容性的结果而存在于细丝芯内的分子挫折的直接反映。我们的发现为通过小分子构建单元的结构设计来创造复杂的超分子聚合物提供了新的机会。
We report here the design and synthesis of an ABC miktoarm star peptide connecting through a lysine junction a short peptide sequence and two hydrophobic but immiscible blocks (a hydrocarbon and a fluorocarbon). The designed molecule can self-assemble into one-dimensional nanostructures with a great diversity of kinetically evolving morphologies in aqueous solution, while molecules that contain only one of the two hydrophobic blocks form structurally similar filaments. We believe the rich assembly behavior and morphological evolution are a direct reflection of the molecular frustration present within the filament core as a result of the in-compatibility of the fluorocarbon and hydrocarbon segments. Our finding opens new opportunities for creating complex supramolecular polymers through the architecture design of small molecular building units.
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