Alanine-Based Chiral Metallogels via Supramolecular Coordination Complex Platforms: Metallogelation Induced Chirality Transfer.
Alanine-Based Chiral Metallogels via Supramolecular Coordination Complex Platforms: Metallogelation Induced Chirality Transfer.
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DOI：
10.1021/jacs.7b10769
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发表时间：
2018-03-07
影响因子：
15
通讯作者：
Stang PJ
中科院分区：
文献类型：
--
作者：
Sun Y;Li S;Zhou Z;Saha ML;Datta S;Zhang M;Yan X;Tian D;Wang H;Wang L;Li X;Liu M;Li H;Stang PJ
手性自组装一直吸引着人们的极大兴趣，因为它们有可能为生物系统和材料科学提供见解。本文报道了利用Pt（II）←吡啶基定向键方法高效制备丙氨酸基手性金属环、菱形1D和1L以及六边形2D和2L。金属环随后在低浓度下组装成纳米球，在氢键、疏水和π−π相互作用的驱动下产生高浓度的手性金属凝胶。通过圆二色性（CD）、扫描电镜（SEM）和透射电子显微镜（TEM）证实，凝胶由具有明确螺旋度的微观手性纳米纤维组成。鉴于这些结果，我们期望这项技术不仅将开启有趣的新方法来理解自然界的同手性，而且还允许设计包含手性超分子核心的多功能软材料。
Chiral self-assemblies constantly attract great interest because of their potential to provide insight into biological systems and materials science. Herein we report on the efficient preparation of alanine-based chiral metal-lacycles, rhomboids 1D and 1L and hexagons 2D and 2L using a Pt(II)← Pyridyl directional bonding approach. The metallacycles are subsequently assembled into nanospheres at low concentration, that generate chiral metallogels at high concentration driven by hydrogen bonding, hydrophobic and π−π interactions. The gels consists of microscopic chiral nanofibers with well-defined helicity, as comfirmed by circular dichroism (CD), scanning (SEM) and transmission electron (TEM) microscopies. Given these results, we expect this technique will not only unlock interesting new approaches to understand homochirality in nature but also allow the design of versatile soft materials containing chiral supramolecular cores.
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作者：
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通讯作者：
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