Issue 79, 2020
From the journal:

Chemical Communications

A bistable [2]catenane switched by hetero-radical pairing interactions†

Yang Zhang,‡a   Qiong Chen,‡a   Yan Wang,a   Xujun Zheng,a   Haiying Wang,b   Fahe Cao,c   Andrew C.-H. Sue ORCID logo *b  and  Hao Li ORCID logo *a  

* Corresponding authors

a Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
E-mail: lihao2015@zju.edu.cn

b School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
E-mail: Andrew.Sue@tju.edu.cn

c School of Materials, Sun Yat-Sen University, Guangzhou 510006, P. R. China

Abstract

A bistable [2]catenane composed of a tetracationic cyclophane, namely cyclobis(paraquat-p-phenylene) (CBPQT4+) that is mechanically interlocked by a neutral macrocylic component containing both a 1,5-dioxynaphthalene (DNP) and a naphthalene-1,4,5,8-bis(dicarboximide) (NDI) unit, was obtained by using template-directed synthesis via click chemistry. In the fully oxidized state, the CBPQT4+ component encircles the DNP unit, driven by donor–acceptor interactions. Upon reduction of both the CBPQT4+ ring and the NDI unit, the CBPQT2(˙+) ring undergoes shuttling and resides on the NDI˙− station, driven by coulombic-enhanced spin-pairing interactions between different aromatic radicals.

Graphical abstract: A bistable [2]catenane switched by hetero-radical pairing interactions

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Article information

DOI
https://doi.org/10.1039/D0CC02012E
Article type
Communication
Submitted
18 Mar 2020
Accepted
20 Aug 2020
First published
21 Aug 2020

Chem. Commun., 2020,56, 11887-11890

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A bistable [2]catenane switched by hetero-radical pairing interactions

Y. Zhang, Q. Chen, Y. Wang, X. Zheng, H. Wang, F. Cao, A. C.-H. Sue and H. Li, Chem. Commun., 2020, 56, 11887 DOI: 10.1039/D0CC02012E

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