Molecules, compositions, and methods for light absorption
AssigneeEmpire Technology Development LLC
InventorJinye Wang
Life of this patent
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Abstract
Embodiments provided herein relate to molecules, compositions, and methods for light absorption. In some embodiments, the molecules and/or compositions can be used to absorb ultraviolet light. In some embodiments, the ultraviolet light absorption compound can be used in a sunscreen composition. In some embodiments, the compound includes an azobenzene group for the absorption of ultraviolet light.
Claims43
A molecule comprising an azobenzene group attached to a heterocycle group and a cholesterol group.
A sunscreen composition comprising an azobenzene, wherein the azobenzene is present in an amount that is sufficient to serve as a sunscreen at an SPF of at least 15.
A sunscreen composition comprising an azobenzene attached to at least one of the following:
- a heterocycle group, a cholesterol group, or both a heterocycle group and a cholesterol group.
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A method of reactivating a sunscreen, the method comprising:
- providing a sunscreen comprising a trans azobenzene;
- exposing the trans azobenzene to ultraviolet light for a first period of time, thereby converting the trans azobenzene to a cis azobenzene;
- and
- allowing the cis azobenzene to return to the trans azobenzene to form reactivated trans azobenzene, thereby reactivating the sunscreen.
A sunscreen comprising a trans form of azobenzene in an amount that is sufficient to serve as the active ingredient in the sunscreen.
A method of making a UV absorbing agent, the method comprising:
- providing an azo compound;
- and
- attaching a cholesterol group to the azo compound.
Dependencies are inferred from the claim text.