Abstract
The Sonogashira cross-coupling polymerization of a dibrominated cyclopenta[hi]aceanthrylene and a diethynylfluorene derivative produced a donor–acceptor copolymer composed solely of cyclopenta-fused polycyclic aromatic hydrocarbons. The resulting polymer displays low band gaps (<1.5 eV), dual absorption bands, and electron-accepting behavior as demonstrated through fluorescence quenching of poly(3-hexylthiophene).
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