Energy transfer from polyphenylene-type polymers to a series of Coumarins and other acceptors

Energy transfer studies were performed with polyphenylene-type polymers as the donating species and a series of organic dyes as the acceptors. The polymers were synthesized via Suzuki coupling of 2,5-didecyloxyphenyl-1,3-bisboronic acid with a corresponding dihaloarene. Coupling with 1,4-dibromobenzene produced a para-only polymer, while 3,5-dibromoethylbenzoate produced a polymer with alternating para- and meta-linkages. Several Coumarins served as singlet acceptors, while some porphyrins were used as triplet acceptors. Photophysical data and energy transfer parameters are presented.