Charge transfer complexes between carbazole and lutetium bisphthalocyanine

Abstract

Donor–acceptor complex formation has been shown to occur between carbazole, an electron donor, and lutetium bisphthalocyanine, an acceptor, through π–π interactions. New transitions due to complexation between the two molecules are observed in the near IR, at about 1500 nm, in the solid state (KBr matrix); from the evolution of the absorption bands with the experimental conditions, it appears that more than one charge transfer complex exists. The nature of the molecular orbitals of the donor and acceptor molecules could explain why these interactions are weak.