Molecular assembly-induced charge transfer between a mixed (phthalocyaninato)(porphyrinato) yttrium triple-decker and a fullerene

An interaction between a mixed (phthalocyaninato)(porphyrinato) yttrium triple-decker and a fullerene in the solution state together with the solid state is clearly revealed by 1H NMR, electronic absorption and luminescence spectroscopy, single crystal X-ray diffraction analysis results and DFT calculations. The close interface between a sandwich-type tetrapyrrole rare earth triple-decker and a fullerene in cocrystals affords stronger charge transfer (CT) and thus a more effective photoelectric conversion response than each individual.