Supramolecular Chirogenesis Engineered by Pt(II)···Pt(II) Metal–Metal Interactions

Chengpeng Wei; Mingyang Liu; Yifei Han; Hua Zhong; Feng Wang

doi:10.1055/a-1512-5965

Organic Materials, Table of Contents

CC BY-NC-ND 4.0 · Organic Materials 2021; 03(02): 374-380
DOI: 10.1055/a-1512-5965

Focus Issue: Supramolecular Optoelectronic Materials

Short Communication

Supramolecular Chirogenesis Engineered by Pt(II)···Pt(II) Metal–Metal Interactions

Chengpeng Wei

^aCAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. of China)

,

Mingyang Liu

^aCAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. of China)

,

Yifei Han

^aCAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. of China)

,

Hua Zhong

^aCAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. of China)

,

Feng Wang

^aCAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. of China)

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Abstract

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Abstract

Supramolecular chirogenesis represents an effective way to induce chirality at the supramolecular level. For the previous host–guest chirogenic systems, metal–ligand coordination, hydrogen bonding, π–π stacking and hydrophobic interactions have been mainly employed as the non-covalent driving forces. In this study, Pt(II)···Pt(II) metal–metal interactions have been engineered to induce supramolecular chirogenesis, by forming non-covalent clipping structures between chiral platinum receptors and achiral platinum guests together. This results in the emergence of Cotton effects in the metal–metal-to-ligand charge transfer region, ascribed to chirality transfer from trans-1,2-diamide cyclohexane unit on chiral receptors to Pt(II)---Pt(II) non-covalent interacting sites. Supramolecular chirogenesis can be further transferred from organic to aqueous solutions, with higher resistance to concentration and temperature variations in the latter medium. Overall, the current study provides new avenues toward supramolecular chirality systems with tailored properties.

Key words

chirality - host–guest recognition - metallotweezers - Pt(II)–Pt(II) metal–metal interactions - supramolecular chemistry

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References and Notes

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