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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >A novel 'off-on' rhodamine-based colorimetric and fluorescent chemosensor based on hydrolysis driven by aqueous medium for the detection of Fe3+
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A novel 'off-on' rhodamine-based colorimetric and fluorescent chemosensor based on hydrolysis driven by aqueous medium for the detection of Fe3+

机译：基于水解的新型“离关”基于水解的基于罗丹明的比色剂和荧光化学传感器检测Fe3 +检测

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摘要

A novel "off-on" colorimetric and fluorescent chemosensor N-2,N-6-bis(2-(rhodamine B amido)ethyl)pyridine-2,6-dicarboxamide (RhBEP) has been designed and synthesized, which can selectively detect the presence of Fe3+ with about 75-fold enhancement in fluorescence emission intensity at 585 nm over various environmentally relevant metal cations such as Hg2+, Cu2+, Cr3+, Li+, Na+, K+, Ag+, Zn2+, Mg2+, Ca2+, Ba2+, Fe2+, Cd2+, Ni2+, Mn2+, Al3+, Bi3+ and Au3+ in PBS reaction media. The remarkable color change from UV-Vis titration experiments indicates that RhBEP can be used as a colorimetric chemosensor for Fe3+. The ultrasensitive detection limit for Fe3+ in the fluorescence measurement is down to 2.0 x 10(-8) mol.L-1. The recognition mechanism of RhBEP to Fe3+ was analyzed by Job's plot and mass spectrometry analysis. In addition, the data from fluorescent cell imaging experiments confirmed that the chemosensor RhBEP has a promising application for the detection of Fe3+ in biological systems. (C) 2019 Published by Elsevier B.V.
机译：设计和合成了一种新颖的“离上”比色和荧光化学传感器N-2，N-6-BIS（2-（Rhodamine B amido）乙基）吡啶-2,6-二酰胺（RHBEP），可以选择性地检测Fe3 +的存在于585nm的荧光发射强度下的Fe3 +在各种环保金属阳离子上，例如Hg2 +，Cu2 +，Cr3 +，Li +，Na +，K +，Ag +，Zn2 +，Mg2 +，Ca2 +，Ba2 +，Fe2 +，CD2 + ，Ni2 +，Mn2 +，Al3 +，Bi3 +和Au3 +在PBS反应介质中。 UV-Vis滴定实验的显着变化表明RHBEP可用作Fe3 +的比色化学传感器。 Fe3 +在荧光测量中的超敏检测限为2.0×10（-8）mol.L-1。通过作业的图和质谱分析分析了RHBEP至Fe3 +的识别机制。此外，来自荧光细胞成像实验的数据证实，Chemosensor RHBEP在生物系统中检测Fe3 +的有望应用。 （c）2019年由elestvier b.v发布。

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