Solid phase photosensitizer for generation of singlet oxygen

Details Solid phase photosensitizer for generation of singlet oxygen Solid phase photosensitizer for generation of singlet oxygen

1984-10-22

1986-04-01

Williams, Howard S.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502150, 502159, 502163, 502173, 502172, 502158, B01J 3300, B01J 1912

Patent

active

045798370

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.

REFERENCES:
patent: 4072630 (1978-02-01), Douglas
patent: 4250053 (1981-02-01), Smith
patent: 4315998 (1982-02-01), Neckers et al.
patent: 4394293 (1983-07-01), Gratzel et al.
Wilson, J.A.C.S., 88:13 (Jul. 5, 1966) pp. 2898-2902.

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