肖睿莹,孙营营,孙建辉,李鹏

• 1:黑龙江大学物理科学与技术学院

摘要(Abstract)：

铁离子(Fe~(3+))作为生命体系和环境体系中的重要金属离子，其含量异常会对人体健康和生态环境造成不利影响，因此建立一种简便、灵敏且选择性良好的Fe~(3+)检测方法具有重要意义。以有机硅纳米点(Organosilicon, OSiNDs)作为荧光探针，构建了一种用于水相中Fe~(3+)检测的荧光传感体系。所制备的OSiNDs具有均一的纳米尺度形貌和稳定的硅氧结构特征，在水溶液中表现出明亮的绿色荧光发射，并具有良好的时间稳定性和pH稳定性。与其他常见金属离子相比，Fe~(3+)可引起OSiNDs荧光最显著的猝灭响应，表现出优异的选择性。随着Fe~(3+)浓度升高，OSiNDs的荧光强度逐渐降低，并在0.5～200μmol·L~(-1)范围内呈现良好的线性关系，检测限低至0.55μmod·L~(-1)。结果表明，OSiNDs作为一种金属自由型荧光纳米探针，在水相Fe~(3+)快速检测领域具有良好的应用潜力，猝灭机理分析表明，该体系主要基于内滤效应实现对Fe~(3+)的荧光响应。

关键词(KeyWords)： 荧光传感;有机硅纳米点;Fe~(3+);内滤效应

Abstract:

Keywords:

基金项目(Foundation): 黑龙江省自然科学基金资助项目(PL2025A017)

作者(Author): 肖睿莹,孙营营,孙建辉,李鹏

DOI: 10.13482/j.issn1001-7011.2026.04.009

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