| http://www.w3.org/ns/prov#value | - A polymeric composition comprising: ##STR11## where at least one of n, p and q is an integer greater than zero; and A1, A2 and A3 are selected from the group consisting of O-R (where R is selected from the group consisting of Cy H2y+1 and Cy F2y+1, where y is an integer greater than three, and aryls), CF???CF2, CN, NO2 and OH.
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