Abstract

Spin–spin interactions between two identical aromatic radicals have been studied extensively and utilized to establish supramolecular recognition. Here we report that spin-pairing interactions could also take place between two different π-electron radicals, namely a bipyridinium radical cation (BPY+•) and a naphthalene-1,8:4,5-bis(dicarboximide) radical anion (NDI─•). The occurrence of this type of previously unreported hetero radical-pairing interactions is attributed to enhancement effect of Coulombic attraction between these two radicals bearing opposite charges. The Coulombic-enhanced hetero radical pairing interactions are employed to drive host–guest recognition, as well as the reversible switching of a bistable [2]rotaxane.

Details

Title
Coulombic-enhanced hetero radical pairing interactions
Author
Zheng, Xujun 1 ; Zhang, Yang 2 ; Cao, Ning 2 ; Li, Xin 2 ; Zhang, Shuoqing 2 ; Du, Renfeng 2 ; Wang, Haiying 3 ; Ye, Zhenni 2 ; Wang, Yan 2 ; Cao, Fahe 2   VIAFID ORCID Logo  ; Li, Haoran 2 ; Hong, Xin 2   VIAFID ORCID Logo  ; Sue, Andrew C-H 3 ; Yang, Chuluo 4 ; Wei-Guang Liu 5 ; Li, Hao 2   VIAFID ORCID Logo 

1  Department of Chemistry, Zhejiang University, Hangzhou, China; Department of Chemistry, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan, China 
2  Department of Chemistry, Zhejiang University, Hangzhou, China 
3  Institute for Molecular Design and Synthesis, School of Pharmaceutical Science & Technology, Health Science Platform, Tianjin University, Tianjin, China 
4  Department of Chemistry, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan, China 
5  Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, MN, USA 
Pages
1-9
Publication year
2018
Publication date
May 2018
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-018-04335-0
ProQuest document ID
2040740625
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.