Author/Authors :
Consoli، نويسنده , , Grazia M.L and Geraci، نويسنده , , Corrada and Neri، نويسنده , , Placido and Bergamini، نويسنده , , Giacomo and Balzani، نويسنده , , Vincenzo، نويسنده ,
Abstract :
An azobenzene bridge was introduced into the lower (or smaller) rim of p-tert-butylcalix[8]arene (1) and 1,5-calix[8]crown-3 (2) to form 1,4-singly bridged (3) and 1,5:3,7-doubly bridged (4) calix[8]arene derivatives, respectively. Trans and cis isomers of conformationally rigid 4 were isolated. The quantum yields of the trans–cis photoisomerisation reactions have been measured.
