Development of rhodamine-based fluorescent probes for sensitive detection of Fe3+ in water: spectroscopic and computational investigations

被引：8

作者：

Wu, Zi-ying ^{[1
]}

Xu, Zhong-yong ^{[1
]}

Yan, Jin-wu ^{[1
,2
]}

Li, Yafang ^{[3
]}

Kou, Qiuye ^{[3
]}

Zhang, Lei ^{[1
,2
]}

机构：

[1] South China Univ Technol, Sch Biol & Biol Engn, Guangzhou 510006, Guangdong, Peoples R China

[2] South China Univ Technol, Guangdong Prov Engn & Technol Res Ctr Biopharmceu, Guangzhou 510006, Guangdong, Peoples R China

[3] Sun Yat Sen Univ, Affiliated Hosp 6, 26th Yuancun Rd 2, Guangzhou 510655, Guangdong, Peoples R China

来源：

NEW JOURNAL OF CHEMISTRY | 2019年 / 43卷 / 04期

基金：

中国国家自然科学基金;

关键词：

TURN-OFF CHEMOSENSORS; ON CHEMOSENSOR; HIGH SELECTIVITY; CHEMICAL SENSOR; IRON; CU2+; IONS; CHEMODOSIMETER; SPECTROMETRY; RECOGNITION;

D O I：

10.1039/c8nj05366a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Four novel rhodamine-based fluorescent probes (RE1-RE4) were designed and synthesized for sensitive detection of Fe3+ in water. RE1-RE4 exhibited low detection limits in the range of 18.6 nM to 29.4 nM. In addition, the binding modes of the probes (RE1-RE4) with Fe3+ were proved to be 1:1 stoichiometry of the complexes by Job's plot and also their complexing ability was determined using the binding constants (RE2 > RE4 > RE3 > RE1). RE2 was selected to study the proposed binding mechanism with Fe3+ by ESI-MS, H-1 NMR and DFT calculations. Furthermore, RE2 was further utilized to detect Fe3+ in living cells and real water samples, indicating its promising prospect in biological and environmental fields.

引用

页码：1725 / 1732

页数：8

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