Author/Authors :
Moribe، نويسنده , , Shinya and Ikoma، نويسنده , , Tadaaki and Akiyama، نويسنده , , Kimio and Tero-Kubota، نويسنده , , Shozo، نويسنده ,
Abstract :
Laser pulse photolysis of amphiphilic anthraquinone-2-sulfonic acid (2-AQS) in liposome buffer solution shows transient electron spin polarization consisting of a net emissive polarization attributable to hydrogen abstraction in a lipid bilayer and a net absorptive pattern caused by electron transfer via the triplet exciplex 3(2-AQS−-Cl−)∗ in an aqueous phase. The diffusion rate of the neutral semiquinone radical from the interior of the lipid bilayer to a bulk water region is determined to be 7 × 105 s−1, suggesting that the rate is slower compared with the micellar system.
