Push-pull [2]pseudorotaxanes. Electronic control of threading by switching ON/OFF an intramolecular charge transfer.
[reaction: see text] Addition of acid and base allows switching between two different structures in a push-pull bis(pyridinium)ethane axle, controlling its ability to form [2]pseudorotaxanes with a dibenzo-24-crown-8 ether wheel.
Vella
Sarah J
SJ
Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, Canada N9B 3P4.
Tiburcio
Jorge
J
Gauld
James W
JW
Loeb
Stephen J
SJ