Synthesis and evaluation of a novel rhodamine B-based ‘off-on’ fluorescent chemosensor for the selective determination of Fe³⁺ ions

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• 作者：Hailang Chen^a ; ^cAuthor Vitae ; Xiaofeng Bao^a ; ^{baoxiaofeng@mail.njust.edu.cn}Author Vitae ; Hai Shu^aAuthor Vitae ; Baojing Zhou^cAuthor Vitae ; Renlong Ye^cAuthor Vitae ; Jing Zhu^b ; ^{zhujing1227@hotmail.com}Author Vitae
• 关键词：Rhodamine derivatives ; Chemosensor ; Fe3+ ; Fluorescent probe
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：242
• 期：Complete
• 页码：921-931
• 全文大小：3880 K
• 卷排序：242

文摘

A new rhodamine B derivative (RDBSF) sensor was synthesized and characterized. Studies show that RDBSF exhibits high sensitivity and selectivity toward Fe3+ in Tris-HCl (1 mM, pH 7.4) /30% MeCN. The binding association constant (Ka) of RDBSF for Fe3+ was estimated as 1.52 × 104 M-1. The detection limit of Fe3+ by RDBSF was further determined as 11.6 nM. RDBSF can be used as a fluorescent probe for the detection of Fe3+ in HepG-2 cells.