Patent ID: 11904037
Assignee: BIONUCLEI
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 0:
1. Semiconductor colloids grafted covalently with an antioxidant, wherein the semiconductor colloids are colloids of zinc oxide, ZnO, and the antioxidant is 3-hydroxybenzaldehyde, wherein:
the 3-hydroxybenzaldehyde is grafted to the ZnO via a covalent bond between the aldehyde group of the 3-hydroxybenzaldehyde and atoms of the ZnO, or
a spacer arm is positioned between the semiconductor colloid and the antioxidant, and is covalently bound to the 3-hydroxybenzaldehyde and the ZnO, wherein an alkoxysilane function of the spacer arm forms a covalent bond with atoms of the ZnO,, wherein the semiconductor colloids regenerate antioxidant activity when exposed to radiation in the range 280 nm to 400 nm in the UV-A and UV-B range.