Photo-properties of a silicon naphthalocyanine: a potential photosensitizer for photodynamic therapy

Abstract— The photoproperties of derivatized silicon naphthalocyanine have been investigated in order to assess its potential as a photosensitizer for photo-dynamic therapy. Absorption, fluorescence, phosphorescence and triplet absorption spectra have been measured. Oxygen quenching of the triplet state formed singlet oxygen in significant yields.     

Intermediate christoffel-minkowski problems for figures of revolution

Necessary and sufficient conditions are described on ap function ω over the unit sphere in Euclideann-spaceE ⁿ in order for ω to be thepth order, elementary symmetric function of the prncipal radii on the boundary of a sufficiently smooth convex body of revolution inE ⁿ ; here these radii are taken as functions of the outer unit normal direction on the bounding surface;p satisfies 1≦p<n−1.