A Highly Selective Turn-on and Reversible Fluorescent Chemosensor for Al3+ Detection Based on Novel Salicylidene Schiff Base-Terminated PEG in Pure Aqueous Solution
A Highly Selective Turn-on and Reversible Fluorescent Chemosensor for Al3+ Detection Based on Novel Salicylidene Schiff Base-Terminated PEG in Pure Aqueous Solution
复制标题
基于新型水杨基希夫碱封端 PEG 的纯水溶液中用于 Al3 检测的高选择性开启和可逆荧光化学传感器
DOI：
10.3390/polym11040573
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发表时间：
2019-04-01
期刊：
影响因子：
5
通讯作者：
Wang, Liping
中科院分区：
文献类型：
--
作者：
Bai, Liping;Xu, Yuhang;Wang, Liping
高选择性和高灵敏度的化学传感器的发展仍然是一个重大的挑战。本文设计并合成了一种基于水杨醛席夫碱的新型水溶性聚合物PEGBAB作为一种开启型荧光化学传感器，用于100%水溶液中Al 3+的检测。与其他竞争性金属离子相比，PEGBAB对Al 3+表现出高灵敏度和选择性，检测限低至4.05 × 10（-9）M。在pH 5-10范围内，PEGBAB对Al ~（3+）具有很高的选择性。在乙二胺四乙酸（EDTA）存在下，PEGBAB对Al ~（3+）的荧光响应是可逆的。基于荧光响应，以Al 3+和EDTA为两个输入，构建了一个INHIBIT逻辑门。此外，基于PEGBAB的测试条的制作方便的现场检测Al 3+。
The development of highly selective and sensitive chemosensors for Al3+ detection in pure aqueous solution is still a significant challenge. In this work, a novel water-soluble polymer PEGBAB based on salicylidene Schiff base has been designed and synthesized as a turn-on fluorescent chemosensor for the detection of Al3+ in 100% aqueous solution. PEGBAB exhibited high sensitivity and selectivity to Al3+ over other competitive metal ions with the detection limit as low as 4.05 x 10(-9) M. PEGBAB displayed high selectivity to Al3+ in the pH range of 5-10. The fluorescence response of PEGBAB to Al3+ was reversible in the presence of ethylenediaminetetraacetic acid (EDTA). Based on the fluorescence response, an INHIBIT logic gate was constructed with Al3+ and EDTA as two inputs. Moreover, test strips based on PEGBAB were fabricated facilely for convenient on-site detection of Al3+.