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Mar 27, 2019;11 (4):

A Highly Selective Turn-on and Reversible Fluorescent Chemosensor for Al Detection Based on Novel Salicylidene Schiff Base-Terminated PEG in Pure Aqueous Solution.

Liping Bai, Yuhang Xu, Guang Li, Shuhui Tian, Leixuan Li, Farong Tao, Aixia Deng, Shuangshuang Wang, Liping Wang
Author Information
  1. Liping Bai: School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China. lppl131401@163.com.
  2. Yuhang Xu: School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China. 17865813297@163.com.
  3. Guang Li: School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China. lglzsd@126.com. ORCID
  4. Shuhui Tian: School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China. ajunahui@163.com.
  5. Leixuan Li: School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China. lileixuan6@163.com.
  6. Farong Tao: School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China. taofarong@lcu.edu.cn.
  7. Aixia Deng: School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China. dengaixia@lcu.edu.cn.
  8. Shuangshuang Wang: School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China. wangshuangshuang@lcu.edu.cn.
  9. Liping Wang: School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China. wangliping5@163.com.
PMID: 30960557 DOI: 10.3390/polym11040573

Abstract

The development of highly selective and sensitive chemosensors for Al 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 Al in 100% aqueous solution. PEGBAB exhibited high sensitivity and selectivity to Al over other competitive metal ions with the detection limit as low as 4.05 × 10 M. PEGBAB displayed high selectivity to Al in the pH range of 5⁻10. The fluorescence response of PEGBAB to Al was reversible in the presence of ethylenediaminetetraacetic acid (EDTA). Based on the fluorescence response, an INHIBIT logic gate was constructed with Al and EDTA as two inputs. Moreover, test strips based on PEGBAB were fabricated facilely for convenient on-site detection of Al.

Keywords

aluminum ions fluorescent chemosensor schiff base test strips water-soluble polymer

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