| 荧光探针法研究铜离子-姜黄素体系中1O2的反应机理及在O2·-存在下1O2的测定 |
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| 引用本文： | 吕庆銮,张苗,岳宁宁,宫斌,王怀友. 荧光探针法研究铜离子-姜黄素体系中1O2的反应机理及在O2·-存在下1O2的测定[J]. 高等学校化学学报, 2009, 30(3): 460-464 |
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| 作者姓名： | 吕庆銮 张苗 岳宁宁 宫斌 王怀友 |
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| 作者单位： | 山东师范大学化学化工与材料科学学院,济南,250014 |
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| 摘 要： | 以1,3-二苯基异苯并呋喃(1,3-Diphenylisobenzofuran, DPBF)为荧光探针, 研究了姜黄素(Curcumin, CUR)在铜离子催化下产生的单线态氧(1O2), 其反应机理为姜黄素与溶液中的氧分子快速作用产生O2·-和H2O2等活性氧物种, 同时Cu2+与姜黄素形成复合物, 再与H2O2形成过氧化物过渡态, 过氧化物进一步与H2O2发生类Haber-Weiss反应生成1O2, 且只有Cu2+和Cu+离子可催化姜黄素并产生1O2. 1O2在1.37×10-8～3.66×10-7 mol/L浓度范围内与荧光强度下降值ΔIF有良好的线性关系, 检出限为4.12×10-9 mol/L.
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| 关 键 词： | 1 3-二苯基异苯并呋喃 姜黄素 单线态氧 荧光猝灭 |
| 收稿时间： | 2008-10-09 |
Production Mechanism Study of Singlet Oxygen in Copper Ion-Catalyzed Curcumin Using Fluorimetric Method and Its Determination in the Presence of Superoxide Anion Radical |
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| L Qing-Luan,ZHANG Miao,YUE Ning-Ning,GONG Bin,WANG Huai-You. Production Mechanism Study of Singlet Oxygen in Copper Ion-Catalyzed Curcumin Using Fluorimetric Method and Its Determination in the Presence of Superoxide Anion Radical[J]. Chemical Research In Chinese Universities, 2009, 30(3): 460-464 |
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| Authors: | L Qing-Luan ZHANG Miao YUE Ning-Ning GONG Bin WANG Huai-You |
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| Affiliation: | College of Chemistry;Chemical Engineering and Materials Science;Shandong Normal University;Jinan 250014;China |
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| Abstract: | The production mechanism of singlet oxygen(1O2) in the curcumin catalyzed by copper ion was studied using 1,3-diphenylisobenzofuran(DPBF) as a selective fluorescence probe.The absorption spectrum of curcumin(CUR) binding to copper ion demonstrated the formation of copper ion-CUR complexes.This complexes were further oxidized by H2O2 giving rise to singlet oxygen,which was similar to Haber-Weiss reaction.That the metal ions catalyzed curcumin to produce 1O2 was tested.Except for Cu2+ and Cu+-CUR systems,no d... |
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| Keywords: | 1 3-Diphenylisobenzofuran Curcumin Singlet oxygen Fluorescence quenching |
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