Different clip-shaped receptor molecules functionalized at one side-wall wi
th a porphyrin unit have been synthesized by a condensation involving a dia
mino glucoluril derivative and a porphyrin dione. A similar condensation re
action with a porphyrin tetraone resulted in porphyrin molecule with two re
ceptor sites. The binding and photophysical properties of some of these por
phyrin-receptor molecules are described.