The composition of claim 1, wherein said ethylenically-unsaturated monomer is selected from those represented by the following general Formula I: wherein: ???R1 is ???OR6; ???C(O)OR7; ???OC(O)R8; ???C???N; or ???CH3; ???R9 is ???H or ???CH3; ???R5 is a halogen, ???OH, ???OR10, or ???C(O)OH; ???R6, ???R7, ???R8, and ???R10 are monovalent aromatic groups, monovalent alicyclic groups, or monovalent C