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Fullerenes, Nanotubes and Carbon Nanostructures Volume 11, 2003 - Issue 3
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Original Articles

Energy Transfer from Photoexcited State of Water Soluble Hexa(Sulfobutyl)fullerene (C60((CH2)4SO3Na)6)

Toshifumi Konishi Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2‐1‐1, Aoba‐ku, Sendai, 980‐8577, Japan
,
Mamoru Fujitsuka Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2‐1‐1, Aoba‐ku, Sendai, 980‐8577, Japan
,
Hongxia Luo Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2‐1‐1, Aoba‐ku, Sendai, 980‐8577, Japan
,
Yasuyuki Araki Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2‐1‐1, Aoba‐ku, Sendai, 980‐8577, Japan
,
Osamu Ito Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2‐1‐1, Aoba‐ku, Sendai, 980‐8577, JapanCorrespondence[email protected]
&
Long Y. Chiang Department of Chemistry and Institute of Nanoscience Engineering, University of Massachusetts, Lowell, Massachusetts, USA
Pages 237-243 | Received 15 Mar 2003, Accepted 22 Apr 2003, Published online: 21 Aug 2006
 
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Abstract

Photophysical properties and reactivities of water‐soluble micelle‐like C60 derivative, C60((CH2)4SO3Na)6 (abbreviated as FC4S), at the excited triplet state were investigated using laser flash photolysis. A new transient absorption band appearing at ca. 700 nm was attributed to the triplet–triplet (T‐T) absorption band of FC4S. This absorption was quenched by O2 via energy transfer forming singlet oxygen, which was confirmed by its luminescence emission band; the quantum yield was evaluated to be 0.36.

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