Naphthocage: A Flexible yet Extremely Strong Binder for Singly Charged Organic Cations
F. Jia, H. Hupatz, L.-P. Yang, H.V. Schröder, D.-H. Li, S. Xin, D. Lentz, F. Witte, X. Xie, B. Paulus, C.A. Schalley, W. Jiang – 2019
We report a quite flexible naphthol-based cage (so-called “naphthocage”) which adopts a self-inclusion conformation in its free state and is able to bind singly charged organic cations extremely strongly (Ka > 107 M-1). Ion-selective electrodes prepared with this naphtocage show a super-Nernstian response to acetylcholine. In addition, the highly stable complex (1010 M-1) between ferrocenium and the naphthocage can be switched elec-trochemically, which lays a basis for its application in stimuli-responsive materials.