Mechanistic investigation of energy transfer in perylene-cored anthracene dendrimers

Abstract

In this publication, we describe results of investigations focusing on detailed mechanisms of directed energy transfer in perylene-cored anthracene dendrimers. To obtain definitive statistical data for probing the energy transfer pathways, we synthesized four analogous dendrimers, which were designed to funnel the energy only from remote anthracene groups to the perylene cores. Static fluorescence studies with these dendrimers revealed that excitation of the anthracene groups led to the core emissions, indicating efficient energy transfer should be involved. Inspection of the energy transfer efficiencies obtained from all ten dendrimers demonstrated that single-step energy transfer should represent a key mechanism for the long-range energy transport in these dendrimers.