Introducing Seven Transition Metal Ions into Terpyridine-Based Supramolecules: Self-Assembly and Dynamic Ligand Exchange Study,Journal of the American Chemical Society

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Introducing Seven Transition Metal Ions into Terpyridine-Based Supramolecules: Self-Assembly and Dynamic Ligand Exchange Study
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-01-07 , DOI: 10.1021/jacs.9b09497
Lei Wang ₁ , Bo Song ₁ , Sandra Khalife ₁ , Yiming Li ₁ , Li-June Ming ₁ , Shi Bai ₂ , Yaping Xu ₃ , Hao Yu ₃ , Ming Wang ₃ , Heng Wang _{1,

4} , Xiaopeng Li ₁

Affiliation

In coordination-driven self-assembly, 2,2':6',2"-terpyridine (tpy) has gained extensive attention in constructing supramo-lecular architectures on the basis of connectivity. In direct self-assembly of large discrete structures, however, the metal ions were mainly limited to Cd(II), Zn(II) and Fe(II) ions. Herein, we significantly broaden the spectrum of metal ions with seven divalent transition metal ions M(II) (M=Mn, Fe, Co, Ni, Cu, Zn, Cd) to assemble a series of supramolecular fractals. In particular, Mn(II), Co(II), Ni(II), Cu(II) were reported for the first time to form such large and discrete structures with connectivity. In addition, the structural stabilities of those supramolecules in gas phase and the kinetics of the ligand exchange process in solution were investigated using mass spectrometry. Such a fundamental study gave the rela-tive order of structural stability in gas phase and revealed the inertness of coordination in solution depending on the metal ions. Those results would guide the future study in tpy-based supramolecular chemistry in terms of self-assembly, character-ization, property and application.

中文翻译：

将七种过渡金属离子引入三联吡啶基超分子中：自组装和动态配体交换研究

在配位驱动的自组装中，2,2':6',2"-三联吡啶（tpy）在构建基于连通性的超分子结构方面受到了广泛关注。然而，在大型离散结构的直接自组装中，金属离子主要限于 Cd(II)、Zn(II) 和 Fe(II) 离子。在此，我们用七种二价过渡金属离子 M(II) (M=Mn, Fe) 显着拓宽了金属离子的谱。、Co、Ni、Cu、Zn、Cd）组装一系列超分子分形，特别是首次报道了 Mn(II)、Co(II)、Ni(II)、Cu(II) 形成此类超分子分形。此外，使用质谱法研究了这些超分子在气相中的结构稳定性以及溶液中配体交换过程的动力学。相并揭示了溶液中配位的惰性取决于金属离子，这些结果将指导未来基于 tpy 的超分子化学在自组装、表征、性能和应用方面的研究。

更新日期：2020-01-07

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