A polymeric molecule having the formula: X—[C(A)2C(B)(B′)]n-Q[CY═C(Z)(Z′)] or [C(A)2=C(B)]n-Q[C(Y)(Y′)—C(Z)(Z′)]—X′, wherein A is either H or F; B and B′ are either H, F, or Cl, and are not necessarily the same; X and X′ are Br, Cl or I (and are not necessarily the same); Y and Y′ are F, Br, Cl or I (and are not necessarily the same); and wherein Z and Z′ are F, Br, Cl or I (and are not necessarily the same); Q is optional and is either oxygen (O) or sulfur (S); and n is at least 1.