A Hierarchical Self-Assembly System Built Up from Preorganized Tripodal Helical Metal Complexes

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• 作者：Takashi Nakamura ; Hikaru Kimura ; Takashi Okuhara ; Masaki Yamamura ; Tatsuya Nabeshima
• 刊名：Journal of the American Chemical Society
• 出版年：2016
• 出版时间：January 27, 2016
• 年：2016
• 卷：138
• 期：3
• 页码：794-797
• 全文大小：356K
• ISSN：1520-5126

文摘

The hierarchical organization strategy has realized elaborate supramolecular structures that are difficult to achieve by a one-pot thermodynamically driven self-assembly. Self-assembly via Schiff base formation of the preorganized tripodal helical unit 2²⁺, which is composed of the tris(bipyridyl) ligand 1 and octahedral metal ion (Ru^II and Fe^II), lead to two supramolecular structures, i.e., a macrobicyclic dimer and an interlocked helicate. Notably, the interlocked helicate had a unique motif with an elongated shape (～58 ?) and linearly aligned metal centers with homochiral configurations (all-Δ or all-Λ), which shows potential for allosteric regulation based on the long-range transmittance of the structural information.