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 metallacycles, 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 consist of microscopic chiral nanofibers with well-defined helicity, as confirmed by circular dichroism (CD) and 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.

中文翻译：

---

通过超分子配位络合物平台的丙氨酸手性金属凝胶：金属凝胶诱导的手性转移

手性自组装不断引起人们的极大兴趣，因为它们有可能为生物系统和材料科学提供深入的见解。在此，我们报告了使用 Pt(II) ← 吡啶基定向键合方法有效制备基于丙氨酸的手性金属环、菱形 1D 和 1L 以及六边形 2D 和 2L。随后金属环以低浓度组装成纳米球，在氢键、疏水性和π-π相互作用的驱动下产生高浓度的手性金属凝胶。凝胶由具有明确螺旋性的微观手性纳米纤维组成，经圆二色性 (CD) 、扫描 (SEM) 和透射电子 (TEM) 显微镜证实。鉴于这些结果，我们预计这项技术不仅将解锁有趣的新方法来理解自然界的同手性，而且还可以设计包含手性超分子核心的多功能软材料。