| 基于分子内荧光能量转移的碘聚合膜荧光传感器 |
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| 引用本文： | 龙立平,尤明旭,王昊,王永祥,杨荣华.基于分子内荧光能量转移的碘聚合膜荧光传感器[J].中国科学B辑,2009,39(6):532-540. |
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| 作者姓名： | 龙立平 尤明旭 王昊 王永祥 杨荣华 |
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| 作者单位： | 湖南大学化学生物传感与计量学国家重点实验室;湖南大学化学化工学院;湖南城市学院化学与环境工程系;北京大学化学与分子工程学院; |
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| 基金项目： | 国家自然科学基金(批准号:20525518,20775005);;湖南省自然科学基金(编号:JT07602)项目资助 |
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| 摘 要： | 合成了基于分子内荧光能量转移的蒽（An）-四苯基卟啉（TPP）双发色团碘荧光探针1．由于An的荧光光谱与TPP的S吸收带具有较好的重叠，供体An与受体TPP之间可以发生有效的分子内荧光能量转移，以An的最大吸收波长作为激发波长时，由于分子内荧光能量转移，受体TPP发出荧光．当碘与探针分子中的识别基团An作用时，导致探针分子的荧光转导基团TPP荧光淬灭．与An、TPP和An＋TPP混合物作敏感材料相比，将探针1固定在PVC膜中制备的敏感膜对碘选择性高、灵敏度好．另外，敏感膜具有很好的重现性、可逆性和稳定性，响应时间小于60S．除Cr2O7^2-和MnO4^-外，食品中常见的无机离子和可能存在的干扰物质不影响碘的测定．在最优条件下，传感器的线性范围为2．04×10^-6-2．36×10^-2mol／L，检出限为3．30×10^-8mol／L．本方法应用于加碘食盐中碘含量的测定，结果满意．
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| 关 键 词： | 光化学传感器 分子内荧光能量转移 蒽 四苯基卟啉 碘 |
| 收稿时间： | 2008-12-05 |
| 修稿时间： | 2009-01-23 |
A fluorescent sensing membrane for iodine based on intramolecular excitation energy transfer of anthryl appended porphyrin |
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| LONG LiPing,YOU MingXu,WANG Hao,WANG YongXiang & YANG RongHua, . State Key Lab of Chemo/Biosensing , Chemometrics,College of Chemistry , Chemical Engineering,Hunan University,Changsha ,China.A fluorescent sensing membrane for iodine based on intramolecular excitation energy transfer of anthryl appended porphyrin[J].Science in China(Series B),2009,39(6):532-540. |
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| Authors: | LONG LiPing YOU MingXu WANG Hao WANG YongXiang & YANG RongHua State Key Lab of Chemo/Biosensing Chemometrics College of Chemistry Chemical Engineering Hunan University Changsha China |
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| Institution: | LONG LiPing1,2,YOU MingXu3,WANG Hao3,WANG YongXiang3 & YANG RongHua1,3 1. State Key Lab of Chemo/Biosensing , Chemometrics,College of Chemistry , Chemical Engineering,Hunan University,Changsha 410082,China,2. Department of Chemistry , Environment Engineering,Hunan City University,Yiyang 413500,3. College of Chemistry , Molecular Engineering,Peking University,Beijing 100871 |
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| Abstract: | A single anthryl appended meso-tetraphenylporphyrin (TPP) dyad has been synthesized and applied in fluorescence sensing of iodine based on intramolecular excitation energy transfer. The molecular recognition of the sensor is based on the interaction of iodine with inner anthracene moiety of the dyad,while the signal reporter for the recognition process is the TPP fluorescence quenching. Because the emission spectrum of anthracene is largely over-lapped with the Soret band absorption of TPP,intramolecular ex... |
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| Keywords: | optical sensor intramolecular fluorescence energy transfer anthracene tetraphenylporphyrin iodine |
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