Photoinduced intra-molecular energy transfer in a novel zinc (II) phthalocyanine bearing poly (aryl benzyl ether) dendritic substituents

► The intramolecular energy transfer in a novel dendrimer of zinc (II) phthalocyanine was studied. ► Intramolecular energy could be transferred from peripheral dendrons to the phthalocyanine core. ► The light-harvest ability of dendrimer phthalocyanines increased with the dendron generation. ► The efficacy of energy transfer was as high as 80% for the 2nd generation dendritic phthalocyanine.