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Emissive Supramolecular Systems Based on Reversible Bond Formation and Noncovalent Interactions
The Chemical Record ( IF 6.6 ) Pub Date : 2020-11-25 , DOI: 10.1002/tcr.202000125
Shinnosuke Horiuchi 1 , Keisuke Umakoshi 1
Affiliation  

Noncovalent interactions and reversible bond formations are widely seen in natural systems for the construction of sophisticated molecular systems that perform various biological processes. Inspired by the natural systems, luminescent supramolecular systems constructed by coordination‐driven self‐assembly and homometallic metal‐metal interations have been studied increasingly. These supramolecular systems show fascinating luminescent behaviors that are not observed from single components. This review summarizes our progress in the development of two types of unique luminescent supramolecular systems. The mononuclear Pt(II) complex units can sandwich coinage metal ions to form heteropolynuclear complexes involving heterometallic metal‐metal interactions. A close proximity of the two or three different metal ions by the noncovalent forces lead to orbital overlapping among the coinage metal ions and the Pt(II) complex units, showing emission color change accompanied with structural transformation and reversible metal binding behaviors. Emissive host‐guest systems consisting of mononuclear metal complexes and a hydrogen‐bonded capsule are also developed, that show a unique encapsulation‐induced emission enhancement (EIEE) behavior.

中文翻译:

基于可逆键形成和非共价相互作用的发射超分子系统

非共价相互作用和可逆键的形成是在自然系统中广泛发现的,用于构建执行各种生物过程的复杂分子系统。受自然系统的启发,由协调驱动的自组装和同金属金属-金属相互作用构成的发光超分子系统得到了越来越多的研究。这些超分子系统显示出令人着迷的发光行为,这是从单个组分中未观察到的。这篇综述总结了我们在开发两种独特的发光超分子系统方面的进展。单核Pt(II)络合物单元可以将造币金属离子夹在中间,形成涉及杂金属-金属相互作用的杂多核络合物。非共价力使两种或三种不同的金属离子紧密接近,导致造币金属离子和Pt(II)络合物单元之间发生轨道重叠,显示发射颜色变化,并伴有结构转变和可逆的金属结合行为。还开发了由单核金属配合物和氢键胶囊组成的自发客体系统,该系统显示出独特的包囊诱导发射增强(EIEE)行为。
更新日期:2020-11-25
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