Cyclodextrin Complexation of a Stilbene and the Self-Assembly of a Simple Molecular Device

(E)-4-tert-Butyl-4′-oxystilbene, 1-, is thermally stable as the (E)-1- isomer but may be photoisomerized to the (Z)-1- isomer as shown by UV-vis and 1H NMR studies in aqueous solution. When (E)-1- is complexed by αCD two inclusion isomers (includomers