| 王红梅,赵川德,刘小乐,王晓川.化学通报,2014,77(6):572. |
| （英）一种基于共振瑞利散射和荧光增强并对Fe3 和 Fe2 具有高识别作用的荧光方法的研究 |
| A novel recognition method for Fe3 and Fe2 based on the Resonance Rayleigh scattering and the fluorescence enhancement |
| 投稿时间：2014-01-03 修订日期：2014-03-02 |
| DOI： |
| 中文关键词: 共振瑞利散射 荧光增强 β-环糊精 1,8-萘酰亚胺 |
| 英文关键词:Resonance Rayleigh scattering, Fluorescence enhancement, β-Cyclodextrins, 1, 8-Naphthalimide. |
| 基金项目:国家自然科学基金资助项目（21307118） |
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| 中文摘要: |
| 本文合成了4-甲基哌嗪-1,8-萘酰亚胺修饰的β-环糊精,该化合物对Fe3 和Fe2 展现了良好的选择性识别能力。当适量的氨水加入到该化合物水溶液中后,溶液体系的荧光被完全淬灭。然而,当Fe3 和Fe2 加入到该溶液体系后,520 nm处的荧光信号和416 nm处的共振锐利散射峰均逐渐增强。Fe3 和Fe2 引起的荧光强度和共振瑞利散射强度比值的差异可用于鉴别Fe3 和Fe2 ,同时,该方法还展现了较高的灵敏度。本文建立的方法对Fe3 检测的线性范围为1.5?10-5 ~ 2.2?10-5 mol L-1,检测限为1.9 ? 10-7 mol L-1。对Fe2 检测的线性范围为0.5?10-5 ~ 4.25?10-5 mol L-1,检测限为2.2?10-7 mol L-1。 |
| 英文摘要: |
| The fluorescent β-cyclodextrin bearing 4-(methylpiperazinyl)-1, 8-naphthalimide (compound 1) has been synthesized and characterized. The maximum excitation and emission emerged at 411 nm and 520 nm, respectively. After addition of the 8?10-4 mol L-1 ammonia into compound 1 aqueous solution, the fluorescence emission was quenched completely. However, upon of addition the Fe3 and Fe2 , the fluorescence signal of compound 1 enhanced immediately. Meanwhile, a resonance Rayleigh scattering peak at 416 nm increased. The difference of the fluorescence enhancement and the resonance Rayleigh scattering signal can distinguish Fe3 and Fe2 with pronounced sensitivity and selectivity. The method exhibited a linear response for Fe3 within the concentration range of 1.5?10-5 ~ 2.2?10-5 mol L-1. The limit of detection was 1.9 ? 10-7 mol L-1. For Fe2 , the linear range was 0.5?10-5 ~ 4.25?10-5 mol L-1, the limit of detection was 2.2?10-7 mol L-1. |
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