Multistate Structural Switching of [3]Catenanes with Cyclic Porphyrin Dimers by Complexation with Amine Ligands
Multistate Structural Switching of [3]Catenanes with Cyclic Porphyrin Dimers by Complexation with Amine Ligands
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DOI：
10.1002/anie.202217002
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发表时间：
2023-01-26
影响因子：
16.6
通讯作者：
Terao，Jun
中科院分区：
文献类型：
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作者：
Oka，Yuki;Masai，Hiroshi;Terao，Jun
具有多态可切换特性的链烷是下一代分子机器和超分子材料的重要组成部分。在此，我们报道了一种配体控制的开关方法，这是一种通过添加胺配体络合控制连环烷多态开关的新方法。为了验证这一方法，合成了一种具有刚性π -体系的[3]环卟啉二聚体。由于[3]链烷的刚性，可以通过与各种胺配体络合来精确控制其环组分之间的相对位置。此外，配体控制的多态开关影响[3]链烷的光学性质：可以通过调节集成胺配体的大小和配位数来调节发射强度。这项工作显示了使用有机配体进行链烷结构开关的实用性，并将有助于进一步开发多态可切换的机械联锁分子。
Catenanes with multistate switchable properties are promising components for next‐generation molecular machines and supramolecular materials. Herein, we report a ligand‐controlled switching method, a novel method for the multistate switching of catenanes controlled by complexation with added amine ligands. To verify this method, a [3]catenane comprising cyclic porphyrin dimers with a rigid π‐system has been synthesized. Owing to the rigidity, the relative positions among the cyclic components of the [3]catenane can be precisely controlled by complexation with various amine ligands. Moreover, ligand‐controlled multistate switching affects the optical properties of the [3]catenanes: the emission intensity can be tuned by modulating the sizes and coordination numbers of integrated amine ligands. This work shows the utility of using organic ligands for the structural switching of catenanes, and will contribute to the further development of multistate switchable mechanically interlocked molecules.