Abstract
Dyads of a N-confused porphyrin (NCP) moiety covalently linked to a porphyrin free-base (H 2P) or a zinc(II) porphyrinate (ZnP) moiety via a flexible alkyl chain of variable length have been synthesized. Photoluminescence study demonstrated an efficient excitation energy transfer from H 2P/ZnP moiety to the NCP moiety. Measurement of the near-IR emission of singlet oxygen produced by these dyads via photosensitization showed that the NCP–ZnP dyads ( Ф Δ = (0.61–0.65) ± 0.13) were better 1O 2 generators than the NCP–P dyads ( Ф Δ = (0.36–0.41) ± 0.08).
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