One-Dimensional Energy/Electron Transfer through a Helical Channel

摘要

A number of molecular devices have been developed for efficient energy/electron transfer (ET/eT) in photo-/electroactive chro-mophores with a particular interest in artificial photosynthesis.It is well recognized that the electron donor/acceptor (D/A) distance in the chromophores is an important parameter for long-lived charge separation.However,for chain chromophores,the D-A distance parameter alone cannot effectively control the charge recombination due to the conformational flexibility.Part of the solution for this is to rigidify the chromophores by incorporating a stiff linker between D and A subunits.Equally important is achieving efficient transport of electron and energy toward charge separation.This may be facilitated by confinement/shielding of chromophores from unwanted quenching by aggregation and environmental effects.