Polymeric photoinitiators

An amide-linked photoinitiator having the following structure:

• wherein
• Q is a small molecule or polymer,
• Ar is selected from the group consisting of:
• R is independently a linear or branched alkyl group, cycloalkyl, alkylenoxy, alkenyl or aryl group, an alkyl group containing a heteroatom or a carbonyl group,
• R1 is independently a linear or branched alkyl group, cycloalkyl, alkylenoxy, alkenyl or aryl group, an alkyl group containing a heteroatom, a carbonyl group or H,
• R2 is independently linear or branched alkyl group, cycloalkyl, alkylenoxy, alkenyl or aryl group, an alkyl groups containing a heteroatom, a carbonyl group, H, OR, NR2, SR, F, Cl, Br or I,
• X is O, NR, S, PR, or SiR2,
• m=0 or 1,
• n=1, and
• y=1-100.