Abstract
We have synthesized a new entity of polymer structures composed of π-conjugated molecules: alternating donor-acceptor (D-A) copolymers featuring orthogonally arrayed transition dipoles along the polymer backbone. Such a unique structure could lead to novel functional fluorescent materials; therefore, we examined fluorescence resonance energy transfer (FRET) properties of the D-A copolymers using absorption, fluorescence, and fluorescence lifetime measurements based on the principle of FRET. The results suggested that the orthogonal and alternating D-A copolymer could potentially lead to a new FRET system in which the efficiency is sensitive to the polymer conformation.
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