Highly selective and sensitive fluorescent nanosensor for zinc ions

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• 作者：Yong  ; Li ; Zhengyin  ; Yang  ; ;   ; ^{yangzy@lzu.edu.cn} ; Zengchen  ; Liu ; Baodui  ; Wang ; Siliang  ; Li[Author vitae]
• 关键词：Zn²⁺ detection ; Fe₃O₄ NPs ; Fluorescence spectra ; Nanosensor
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2011
• 出版时间：15 December 2011
• 年：2011
• 卷：160
• 期：1
• 页码：1504-1507
• 全文大小：588 K

文摘

Iron oxide magnetic nanoparticles were covalently modified by a fluorescent 8-aminoquinoline derivative and formed an optical sensor to be used as a highly sensitive and selective Zn²⁺ ions fluorescent nanosensor in aqueous solution at pH 7.0. The nanosensor was sufficiently characterized by physicochemical methods. The sensor can detect Zn²⁺ ions in aqueous solution with a submicromolar sensitivity of 0.1 ¦ÌM, and the interfering metal ions cannot influence its selectivity. MTT assay experiments indicated that the sensor showed no apparent cytotoxicity.