| Oscillating chemiluminescence in rhodamine B-induced Belousov-Zhabotinsky reaction catalyzed by Ce（IV） |
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| 作者姓名： | DUAN ChunFeng LIU GuangMing ZHANG ZhiFeng CUI Hua |
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| 作者单位： | Department of Chemistry, University of Science and Technology of China, Hefei 230026, China |
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| 基金项目： | Supported by the Overseas Outstanding Young Scientist Program of Chinese Acad-emy of Sciences and the National Natural Science Foundation of China (Grant No. 20625517) |
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| 摘 要： | It was found that rhodamine B could induce oscillating chemiluminescence （OCL） from the Ce4＋-catalyzed Belousov-Zhabotinsky reaction. This new OCL system, i.e., rhodamine B-malonic acid-bromate- Ce（IV）-sulfuric acid, exhibited two clearly distinguished emission peaks in each oscillation period. The initial concentrations of the reactants strongly influenced the oscillation pattern. For the study of the CL mechanism, a platform for a versatile and simultaneous potential and CL measurement was estab- lished to compare the potential oscillation with the CL oscillation behavior of this system. The CL spectra, UV-visible absorption spectra and time-resolved fluorescence spectra of this OCL system were studied. A possible, simplified mechanism for the OCL is proposed. It is suggested that the generation of the two CL peaks is likely due to the oxidation of the intermediate of rhodamine B by Ce（IV） and Br2, respectively. This work provided a new method and platform to research the complex chemical oscilla- tions.
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| 关 键 词： | 罗丹明B 振荡周期 化学发光 反应 诱导 催化 时间分辨荧光光谱 紫外可见吸收光谱 |
| 收稿时间： | 2008-11-17 |
| 修稿时间： | 2009-01-22 |
Oscillating chemiluminescence in rhodamine B-induced Belousov-Zhabotinsky reaction catalyzed by Ce(IV) |
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| DUAN ChunFeng,LIU GuangMing,ZHANG ZhiFeng,CUI Hua.Oscillating chemiluminescence in rhodamine B-induced Belousov-Zhabotinsky reaction catalyzed by Ce(IV)[J].Chinese Science Bulletin,2009,54(11):1901-1907. |
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| Authors: | ChunFeng Duan GuangMing Liu ZhiFeng Zhang Hua Cui |
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| Institution: | (1) Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China |
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| Abstract: | It was found that rhodamine B could induce oscillating chemiluminescence (OCL) from the Ce4+-catalyzed Belousov-Zhabotinsky reaction. This new OCL system, i.e., rhodamine B-malonic acid-bromate-Ce(IV)-sulfuric acid,
exhibited two clearly distinguished emission peaks in each oscillation period. The initial concentrations of the reactants
strongly influenced the oscillation pattern. For the study of the CL mechanism, a platform for a versatile and simultaneous
potential and CL measurement was established to compare the potential oscillation with the CL oscillation behavior of this
system. The CL spectra, UV-visible absorption spectra and time-resolved fluorescence spectra of this OCL system were studied.
A possible, simplified mechanism for the OCL is proposed. It is suggested that the generation of the two CL peaks is likely
due to the oxidation of the intermediate of rhodamine B by Ce(IV) and Br2, respectively. This work provided a new method and platform to research the complex chemical oscillations.
Supported by the Overseas Outstanding Young Scientist Program of Chinese Academy of Sciences and the National Natural Science
Foundation of China (Grant No. 20625517) |
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| Keywords: | chemiluminescence chemical oscillation rhodamine B simultaneous measurement |
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