Crosslinked polymers with low loss and tunable refractive indices

1. A co-polymer, formed by a process comprising:

reacting a first monomer with a second monomer;

wherein said first monomer comprises a halocatechol diacrylate, a haloresorcinol diacrylate, or a halohydroquinone diacrylate; and

wherein said second monomer comprises a charge transporting moiety.

2. The co-polymer of claim 1 , wherein the first monomer is chosen from the group consisting of:

wherein X is a halogen; R1 is independently at each occurrence a hydrogen, a halogen, a C1-C6 alkyl group that can be further substituted with one or more halogens, or a phenyl group containing at least one halogen; and m=1-4.

3. The co-polymer of claim 1 , wherein the charge transporting moiety comprises a hole transporter.

4. The co-polymer of claim 3 , wherein the hole transporter comprises an amine substituted with at least two aryl groups, wherein each aryl group is further independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups.

5. The co-polymer of claim 4 , wherein the hole transporter comprises a carbazole that is further independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups, a diphenyl amine that is further independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups, a triphenyl amine that is further independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups, or an tetraphenylbenzidine is further independently substituted with one or more halogens, alkyl, heteroalkyl, aryl, or heteroaryl groups.

6. The co-polymer of claim 3 , wherein the hole transporter comprises an amine substituted with at least two aryl groups.

7. The co-polymer of claim 6 , wherein the hole transporter comprises a carbazole, a diphenyl amine, a triphenyl amine, or a tetraphenylbenzidine.