Dalvand, ParastooNchimi Nono, KatiaShetty, DineshBenyettou, FarahAsfari, ZouhairPlatas-Iglesias, CarlosOlson, Mark AnthonyTrabolsi, AliElhabiri, Mourad2022-01-182022-01-182021-09-02P. Dalvand, K. N. Nono, D. Shetty, F. Benyettou, Z. Asfari, C. Platas-Iglesias, M. A. Olson, A. Trabolsi and M. Elhabiri, Viologen–cucurbituril host/guest chemistry – redox control of dimerization versus inclusion, RSC Adv., 2021, 11, 29543–29554.2046-2069http://hdl.handle.net/2183/29412[Abstract] Two calix[4]arene systems, C234+ and C244+ – where 2 corresponds to the number of viologen units and 3–4 corresponds to the number of carbon atoms connecting the viologen units to the macrocyclic core – have been synthesized and led to the formation of [3]pseudorotaxanes when combined with either CB[7] or CB[8]. The [3]pseudorotaxanes spontaneously dissociate upon reduction of the bipyridinium units as the result of intramolecular dimerization of the two face-to-face viologen radical cations. CB[7] and CB[8]-based [2]pseudorotaxanes containing monomeric viologen guest model compounds, MC32+ and MC4+, do not undergo decomplexation and dimerization following electrochemical reduction of their bipyridinium units.engAtribución-NoComercial 3.0 Españahttp://creativecommons.org/licenses/by-nc/3.0/es/journal articleopen access10.1039/D1RA05488K