PHOTO-VINYL LINKING AGENTS
Embodiments of the invention include linking agents including photo groups and vinyl groups and coatings and devices that incorporate such linking agents, along with related methods. Exemplary methods herein include methods of priming substrates and methods of coating substrates using compounds having the formula R 1 —X—R 2 , wherein R 1 is a radical comprising a vinyl group, X is a radical comprising from about one to about twenty carbon atoms, and R 2 is a radical comprising a photoreactive group. Embodiments herein also include linking agents having the formula R 1 —X—R 2 , wherein R 1 is a radical comprising a vinyl group, X is a radical comprising from about one to about twenty carbon atoms, and R 2 is a radical comprising a photoreactive group. Other embodiments are also included herein.
1 . A device comprising:
a substrate;
a linking agent bound to the surface of the substrate through the residue of a photoreactive group, the linking agent having the formula R 1 —X—R 2 , wherein R 1 is a radical comprising a vinyl group, X is a radical comprising from about one to about twenty carbon atoms, and R 2 is a radical comprising a photoreactive group.
2 . The device of claim 1 , wherein X comprises from about one to 10 carbon atoms.
3 . The device of claim 1 , wherein X further comprises a heteroatom.
4 . The device of claim 1 , wherein X comprises a charged group.
5 . The device of claim 1 , wherein the linking agent is water soluble.
6 . The device of claim 1 , wherein the photoreactive group comprises an aryl ketone.
7 . The device of claim 1 , wherein the vinyl group is part of an acrylate group.
8 . The device of claim 1 , wherein R 1 comprises at least two vinyl groups.
9 . The device of claim 1 , the device comprising an implantable medical device.
10 . A method of coating a surface of a substrate, the method comprising the steps of:
providing a photoreactive linking agent capable, upon activation, of covalent attachment to the surface of the substrate, the agent comprising a photoreactive group and a vinyl group;
forming a coating composition comprising the linking agent and a solvent system;
placing the coating composition in bonding proximity to the surface of the substrate, and
activating the photoreactive groups of the linking agent in order to bond the photoreactive linking agent to the surface.
11 . The method of claim 10 , further comprising:
depositing a desired compound selected from the group consisting of a monomer, macromer, and polymer on the photoreactive linking agent, and
covalently bonding the agent to the photoreactive linking agent through reaction with the vinyl group.
12 . The method of claim 11 , the linking agent having the formula R 1 —X—R 2 , wherein R 1 is a radical comprising a vinyl group, X is a radical comprising from about one to about twenty carbon atoms, and R 2 is a radical comprising a photoreactive group.
13 . The method of claim 12 , wherein X further comprises a heteroatom.
14 . The method of claim 12 , wherein X comprises a charged group.
15 . The method of claim 12 , wherein X is charge neutral in aqueous solution at a pH of 7.
16 . The method of claim 10 , wherein the linking agent is water soluble.
17 . The method of claim 10 , wherein the vinyl group is part of an acrylate group.
18 . The method of claim 10 , the substrate comprising a polymer.
19 . A compound having the formula:
wherein
X 1 is selected from O and NH;
X 2 is selected from O and NH;
R 1 is selected from H and CH 3 ;
M + is a cation; and
n is from 1 to 10.
20 . A linking agent having formula R 1 —X—R 2 , wherein R 1 comprises a radical including vinyl group, X comprises a radical including a phosphorus atom, and R 2 comprises a radical including a photoreactive group.
21 . The linking agent of claim 20 , wherein X comprises a radical including from about one to 10 carbon atoms.
22 . The linking agent of claim 20 , wherein X further comprises a heteroatom selected from the group consisting of oxygen, nitrogen, and sulfur.
23 . The linking agent of claim 20 , wherein X comprises a charged group.
24 . The linking agent of claim 20 , wherein the photoreactive group comprises an aryl ketone.
25 . The linking agent of claim 20 , wherein the vinyl group is part of an acrylate group.