A π-extended molecular belt with selective binding capability for fullerene C70
Zhenglin Du1, Jialin Xie2, Yandie Liu1
1School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China. zhukelong@mail.sysu.edu.cn.
Abstract:
A molecular belt incorporating naphthalene moieties, featuring an ellipsoidal cavity, was precisely engineered through bottom-up synthesis. Its pre-arranged geometry exhibits excellent complementarity to fullerene C70, resulting in remarkable selective binding ability (K = 1.3 × 106 M-1) for C70 compared to C60 (K = 176 M-1), forming a 1 : 1 complex. This superiority was unequivocally demonstrated by the single crystal structure of the complex, which revealed outstanding concave-convex shape complementarity between the two components. This highlights the potential application of molecular belts in the purification and separation of fullerenes.
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