Chrysene derivative materials

1. A compound having Formula I

where:

R 1 is the same or different at each occurrence and is selected from the group consisting of H, D, alkyl, alkoxy, silyl, and siloxane, or adjacent R 1 groups may be joined together to form a 5- or 6-membered aliphatic ring,

Ar 1 and Ar 2 are the same or different and are aryl groups,

a is an integer from 1 to 6;

b is an integer from 1 to 2;

c is an integer from 1 to 3; and

wherein at least one R 1 is D.

2. The compound of claim 1 , wherein R 1 is D.

3. The compound of claim 1 , wherein R 1 is D, a=5-6, b=1-2 and c=2-3.

4. The compound of claim 1 , wherein at least one R 1 is a branched alkyl group.

5. The compound of claim 1 , wherein Ar 1 and Ar 2 are selected from the group consisting of phenyl, biphenyl, naphthyl, phenanthryl, anthracenyl, 4-naphthylphenyl, 4-phenanthrylphenyl, where any of the preceding groups may be further substituted with one or more substituents selected from the group consisting of D, alkyl groups, silyl groups, and phenyl, and a group having Formula II:

where:

R 2 is the same or different at each occurrence and is selected from the group consisting of H, D, alkyl, alkoxy, siloxane and silyl, or adjacent R 2 groups may be joined together to form an aromatic ring; and

m is the same or different at each occurrence and is an integer from 1 to 6.

6. The compound of claim 1 , wherein Ar 1 and Ar 2 are selected from the group consisting of phenyl, biphenyl, terphenyl, naphthylphenyl, and deuterated analogs thereof.

7. The compound of claim 1 , wherein Ar 1 ≠Ar 2 .

8. A chrysene compound selected from the group consisting of compounds C1 and C5:

and

wherein each of the above compounds C1 and C5 is deuterated.

9. The chrysene compound of claim 1 , wherein the compound is C2: