{HEAD ~ Another preferred embodiment} of {TAIL ~ the invention} provides 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) 
of
{ HEAD ~ Another preferred embodiment } of { TAIL ~ the invention } provides 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 )
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