Conjugated copolymer–photosensitizer molecular hybrids with broadband visible light absorption for efficient light-harvesting and enhanced singlet oxygen generation

Abstract

We have developed conjugated copolymer–photosensitizer molecular hybrids (PFBDBP–IPBP) with a strong, broad (from <400 nm to ∼700 nm) and continuous visible absorption. The photosensitizing ability of PFBDBP–IPBP was demonstrated to be higher than that of the monochromophore-based IPBP, owing to rational manipulation of the multiple intramolecular energy transfer. In addition, we demonstrated that the developed PFBDBP–IPBP displays excellent photostability compared to the IPBP.