Photoreactive inclusion complex of aryliodonium salt encapsulated by methylated-β-cyclodextrin

A novel photoreactive inclusion complex (PIC) with an excellent water solubility was obtained by the complexation of methylated-p-cyclodextrin (Me-beta-CD) with the hydrophobic 4,4'-dimethyl diphenyliodonium salt (DMDPI). The photoreactivity of the complex PIC was examined by the kinetic studies in order to evaluate the influence of Me-beta-CD complexation. The photoreactive rate was enhanced in the photolysis of PIC compared with the uncomplexed DMDPI. By employing the photosensitizer at the visible region composed with PIC, the complex system can be used to initiate the photoreaction even in the visible region. (c) 2007 Elsevier B.V. All rights reserved.