a polymeric chain derived from a fluorinated epoxide in a further embodiment r f may be represented by the following formula a wherein the open substituent positions not designated on the main chain of formula a can be the same or different and may independently be selected from a group consisting of hydrogen halogen especially fluorine alkyl heteroalkyl aryl heteroaryl or a halogenated preferably fluorinated derivative of alkyl heteroalkyl aryl or heteroaryl u2014 or a u2014 oc o r a u2014 c o or a u2014 c o nr a r b wherein r a and r b are independently hydrogen alkyl heteroalkyl aryl heteroaryl or a halogenated preferably fluorinated derivative of alkyl heteroalkyl aryl or heteroaryl z 1 z 2 and z 3 are independently oxygen or absent a b and c are the weight fractions of the corresponding repeating units and are independently in the range of 0 1 with their sum no greater than 1 the alkyl group referred to in formula a may have 1 20 carbon atoms and the aryl group may have 6 18 carbon atoms the open substituent positions of formula a are preferably hydrogen fluorine or a fluorinated alkyl it will be recognized that when the preparation of the compounds of formula i and formula ii involves the reaction of a formed phthalocyanine naphthalocyanine or metal phthalocyanine naphthalocyanine with reagent s that inserts r 1 groups the resulting product may be a mixture of compounds having different degrees of r 1 substitution on the phthalocyanine naphthalocyanine rings so that m n p and q may be different on each of the phenyl.