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