Rational design of a phthalocyanine-perylenediimide dyad with a long-lived charge-separated state

Abstract

A new ZnPc-PDI dyad presenting for the first time a charge-separated state lower in energy than the triplet excited state of the ZnPc and PDI has been synthesized. The rational design implies the substitution of the ZnPc with phenoxy groups and the bay substitution of the PDI with sulfonyl substituents. The lifetime of the charge-separated state was 72 μs. © The Royal Society of Chemistry 2012.