Polymer composite for encapsulating quantum dots

1. A polymer composite comprising:

(a) 0.01 to 5% by weight of quantum dots;

(b) 50 to 88% by weight of polymerized units of a compound of formula (I)

wherein R 1 is hydrogen or methyl and R 2 is a C6-C20 aliphatic polycyclic substituent; and

(c) 0.5 to 5% by weight of a light stabilizer compound comprising two 1-alkyloxy-2,2,6,6-tetramethyl-4-piperidinyl substituents; wherein R 2 is a bridged polycyclic substituent.

2. The polymer composite of claim 1 in which R 2 is a C7-C17 bridged polycyclic substituent.

3. The polymer composite of claim 2 in which the light stabilizer compound comprises a linker connecting the substituents, said linker having from 4 to 20 carbon atoms.

4. The polymer composite of claim 3 in which an alkyl group in each of the 1-alkyloxy-2,2,6,6-tetramethyl-4-piperidinyl substituents has from 4 to 12 carbon atoms.

5. The polymer composite of claim 4 wherein R 2 is selected from the group consisting of adamantanes, bicyclo[2,2,1]alkanes, bicyclo[2,2,2]alkanes, bicyclo[2,1,1]alkanes and tricyclodecanes which may be substituted with (meth)acrylate esters such that the polymer composite comprises polymerized units of a compound of formula (I) having one (meth)acrylate ester substituent and a compound of formula (I) having two (meth)acrylate ester substituents in a weight ratio from 100:1 to 1:5, respectively.

6. The polymer composite of claim 5 in which R 2 has a bicyclo[2,2,1]alkane or tricyclodecane ring system.

7. The polymer composite of claim 6 in which the quantum dots comprise CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, GaN, GaP, GaAs, InP, InAs or a combination thereof.

8. The polymer composite of claim 5 further comprising a scattering agent.

9. The polymer composite of claim 5 which is a film.