TY - JOUR
T1 - Time-resolved EPR study on photoreduction of sodium anthraquinone-2-sulfate in liposomes
AU - Moribe, Shinya
AU - Ikoma, Tadaaki
AU - Akiyama, Kimio
AU - Tero-Kubota, Shozo
N1 - Funding Information:
This study was financially supported by a Grant-in-Aid for Scientific Research on Priority Area (417) from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of the Japanese Government and the Murata Science Foundation.
PY - 2008/5/20
Y1 - 2008/5/20
N2 - 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.
AB - 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.
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U2 - 10.1016/j.cplett.2008.03.089
DO - 10.1016/j.cplett.2008.03.089
M3 - Article
AN - SCOPUS:43549086385
SN - 0009-2614
VL - 457
SP - 66
EP - 68
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -