Solid phase photosensitizer for generation of singlet oxygen
US4579837A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Oct 22, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B13/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A solid phase photosensitizer and method of use for photochemical generation of singlet oxygen. The sensitizer comprises one or more layers of an organic polycrystalline dye solid which absorbs radiant energy to release triplet excitons. Where multiple layers are employed, triplet state energies of the layers decrease toward the outer surface. A sub-monomolecular surface layer of organic molecules has a triplet state energy which is less than that of the adjacent dye-solid layer but greater than that of molecular oxygen. The sub-monomolecular layer thus functions to trap exciton energy at the sensitizer surface for reaction with gaseous molecular ground state oxygen directed thereover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.