M. Nakagawa et al., Preparation of monolayers of ion-paired macrocyclic amphiphiles to estimate a critical free space required for azobenzene photoisomerization, CHEM LETT, (11), 1999, pp. 1209-1210
a novel family of ion-paired macrocyclic amphiphiles consisting of a tetrac
ationic cyclophane and long-chain sulfonates was developed to form stable m
onolayers incorporating azobenzene moieties with tailor-made photoisomeriza
bility.