{HEAD ~ This aspect} of the invention thus broadly provides an acrylate or methacrylate monomer bearing an ion exchange site carrying {TAIL ~ a protonated fluoride anion} of the formula (x F) 
{ HEAD ~ This aspect } of the invention thus broadly provides an acrylate or methacrylate monomer bearing an ion exchange site carrying { TAIL ~ a protonated fluoride anion } of the formula ( x F )
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH