prov:value
| - r, Z is independently ???C(CH3)2???, ???CH2???, ???C(O)???, ???S???, ???S(O)???, or ???S(O)2???, and Q is independently O or S; ii) a monomer comprising a major portion having the structure wherein R1 is independently hydrogen or methyl, R2 is independently H or Br, Z is independently ???C(CH3)2???, ???CH2???, ???C(O)???, ???S???, ???S(O)???, or ???S(O)2???, and L is a linking group independently
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