A Tristable [2]Pseudo[2]Rotaxane

by Trabolsi, A., Fahrenbach, A. C., Dey, S. K., Share, A. I., Friedman, D. C., Basu, S., Gasa, T. B., Khashab, N. M., Saha, Aprahamian, I., Khatib, H. A., Flood, A. H., Stoddart, J. F.
Year: 2010


Trabolsi, A.; Fahrenbach, A. C.; Dey, S. K.; Share, A. I.; Friedman, D. C.; Basu, S.; Gasa, T. B.; Khashab, N. M.; Saha, S.; Aprahamian, I.; Khatib, H. A.; Flood, A. H.; Stoddart, J. F. A Tristable [2]Pseudo[2]Rotaxane. Chem. Commun. 2010, 46, 871-873


A strategy towards increasing the lifetime of the metastable state of a [2]rotaxane incorporating tetrathiafulvalene, 1,5-dioxynaphthalene and bipyridinium (BIPY2+) is presented. Incorporation of BIPY2+ served multiple roles as an electrostatic barrier to relaxation, a supramolecular recognition site for bis-1,5-dioxynaphthalene[38]crown-10 macrocycle, and upon reduction a recognition site for the mechanically bonded cyclobis(paraquat-p-phenylene) ring.


Tristable [2]pseudo[2]rotaxane