{HEAD ~ Another preferred embodiment} of the invention provides {TAIL ~ a polymerizable monomer}, preferably an acryic or methacrylic acid based monomer, bearing an anion exchange site carrying a protonated, fluoride containing anion of the formula (x F) 
{ HEAD ~ Another preferred embodiment } of the invention provides { TAIL ~ a polymerizable monomer } , preferably an acryic or methacrylic acid based monomer , bearing an anion exchange site carrying a protonated , fluoride containing anion of the formula ( x F )
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH