| http://www.w3.org/ns/prov#value | - wherein R1 is an anchoring group, said anchoring group including at least one atom selected from the group consisting of: a nitrogen atom, an oxygen atom, a silicon atom and a sulfur atom; R2 is a conjugated group; R4 is a charge transfer group; M is independently selected from the group consisting of: O, NH, NR and S where R is a small alkyl group; n is an integer from 1 to 3; j is an integer fro
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