Coulombic-enhanced hetero radical pairing interactions

Nature Communications
Xujun ZhengHao Li

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.

References

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Citations

Jul 13, 2019·Angewandte Chemie·Yong-Fei YinKang-Da Zhang
Jul 26, 2019·Chemistry : a European Journal·Wenhuan HuangGuoqing Zhang
Aug 26, 2020·Chemical Communications : Chem Comm·Fan LiaoGuoqing Zhang
Oct 7, 2020·Chemical Communications : Chem Comm·Yang ZhangHao Li
Feb 28, 2019·Journal of the American Chemical Society·Xujun ZhengChuluo Yang
Dec 29, 2020·Journal of the American Chemical Society·Wei-Ling JiangHai-Bo Yang
Nov 13, 2021·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Javid Ahmad MallaPinaki Talukdar

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Methods Mentioned

BETA
electron paramagnetic resonance
nuclear magnetic resonance
NMR

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