Photo-induced intra-molecular energy transfer of tetra-{3,5-di-(4-nitro benzyloxy) benzyloxy} zinc (II) phthalocyanine

摘要

The photophysical properties of a novel dendrimer tetra-{3, 5-di-(4-nitro benzyloxy) benzyloxy} zinc phthalocyanine (DZnPc) was studied by steady-state, time-resolved fluorescence and UV/Vis spectroscopy. DZnPc mainly existed as a monomer in DMF. Intra-molecular energy could be transferred from peripheral dendrons, as donors, to the phthalocyanine core, as an acceptor, during a photo-induced process. The intra-molecular energy transfer quantum yield was as high as 65% for this dendritic phthalocyanine. The study suggests that this novel dendritic phthalocyanine could be used as an efficient energy transfer system.