Noncovalent tailoring of coordination complexes by resorcin[4]arene-based supramolecular hosts
Noncovalent tailoring of coordination complexes by resorcin[4]arene-based supramolecular hosts
复制标题
基于间苯二酚[4]芳烃的超分子宿主对配位化合物的非共价剪裁
DOI：
10.1039/d3dt00710c
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发表时间：
2023
影响因子：
4
通讯作者：
Umakoshi Keisuke
中科院分区：
文献类型：
--
作者：
Horiuchi Shinnosuke;Hayashi Mikihiro;Umakoshi Keisuke
在密闭腔中识别客体分子是生物和人工分子系统中的重要现象之一。当客体被困在人造纳米空间中时，它的构象通过与宿主框架的非共价相互作用以一种不同寻常的方式固定，并且客体通过宿主的空间效应与主体溶剂保持距离。因此，主客体形成通过非共价相互作用导致客体的化学和物理性质的有效调制。与许多有机嘉宾的例子相比，使用协调复杂嘉宾的主客形成的例子很少被探索。这仅仅是由于小型主机和大型协调复杂客人之间的大小和形状互补问题。经证实，间苯二甲酸乙酯基超分子宿主可通过有效的分子相互作用提供足够大的内部腔，以在内部空间内完全容纳配位复合物。在本文中，我们重点研究了在间苯二甲酸乙酯基超分子宿主体内控制配合物客体的化学和物理性质的超分子策略。通过精心选择宿主和客体配合物，这些组合可以产生新的超分子体系，显示出不同寻常的结构、氧化还原、催化和光物理性质。
Molecular recognition of guest molecules in a confined cavity is one of the important phenomena in biological and artificial molecular systems. When the guest is trapped within an artificial nano-space, its conformation is fixed in an unusual fashion by noncovalent interactions with host frameworks, and also the guest is kept away from the bulk solvent by the steric effect of the host. Therefore, host–guest formations lead to the effective modulation of the chemical and physical properties of guests via noncovalent interactions. In contrast to the many examples of organic guests, the examples of host–guest formation using coordination complex guests have been less explored. This is simply due to the size and shape complementarity problem between small hosts and large coordination complex guests. Resorcin[4]arene-based supramolecular hosts have been shown to provide internal cavities that are large enough to fully accommodate coordination complexes within the internal spaces via effective molecular interactions. In this article, we focus on supramolecular strategies to control the chemical and physical properties of the coordination complex guests within resorcin[4]arene-based supramolecular hosts. By the careful selection of the host and guest complexes, these combinations can produce a new supramolecular system, showing unusual structures, redox, catalytic, and photophysical properties derived from the entrapped coordination complexes.