| 黄嘌呤甲基衍生物的发光特性研究 |
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| 引用本文： | 卫艳丽,姚建国,杨频,董川.黄嘌呤甲基衍生物的发光特性研究[J].光谱实验室,2003,20(5):650-655. |
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| 作者姓名： | 卫艳丽 姚建国 杨频 董川 |
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| 作者单位： | 山西大学化学化工学院,山西省太原市,030006 |
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| 基金项目： | 国家自然科学基金 (No.2 0 172 0 35 )，山西省自然科学基金 (2 0 0 110 10 )资助项目 |
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| 摘 要： | 本文对3种黄嘌呤类化合物(咖啡因，茶碱，可可碱)的液氮低温荧光(LTF)、低温磷光(LTP)、室温流体荧光(RTF)及滤纸表面室温磷光(PS-RTP)发光光谱特性进行了对比研究。研究表明，这3种物质的LTF、LTP、PS—RTP及RTF的最大激发波长λex在270—295nm范围内，最大发射波长λem在385—445nm范围内，且它们的λex和λem不论在什么状态下都非常相近。本文也对这3种物质的荧光量子产率、滤纸基质室温磷光(PS—RTP)寿命、偏振等性质进行了比较研究。实验表明：咖啡因、茶碱和可可碱的PS-RTP的寿命均在0．1s数量级，属于长寿命磷光，且PS--RTP为非完全偏振光。
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| 关 键 词： | 黄嘌呤甲基衍生物 发光特性 室温磷光 荧光 咖啡因 茶碱 可可碱 分光光度法 |
| 文章编号： | 1004-8138(2003)05-0650-06 |
| 修稿时间： | 2002年3月1日 |
Study on Luminescence Performance of Three Methylxanthine Derivatives |
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| WEI Yan-Li,YAO Jian-Guo,YANG Pin,DONG Chuan.Study on Luminescence Performance of Three Methylxanthine Derivatives[J].Chinese Journal of Spectroscopy Laboratory,2003,20(5):650-655. |
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| Authors: | WEI Yan-Li YAO Jian-Guo YANG Pin DONG Chuan |
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| Abstract: | The low temperature phosphorescence(LTP),low temperature fluorescence(LTF),paper surface room temperature phosphorescence(PS-RTP) and room temperature fluorescence(RTF) properties of caffeine?theophylline and theobromine were investigated and compared.Their maximal excitation wavelength and emission wavelength are in the range of 270-295nm and 385-445nm, respectively. And the PS-RTP characters of lifetime, polarization and quanta efficiency were also investigated and compared. It is found that their lifetimes of PS-RTP are all in the level of 0.1s. They belong to long-life phosphorescence and their PS-RTP spectra are incomplete polarized light. |
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| Keywords: | Room Temperature Phosphorescence Fluorescence Caffeine Theophylline The-obromine |
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