Issue 42, 2025, Issue in Progress
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RSC Advances

AIE-active fluorescent probes as ‘turn-off’ sensors for the selective detection of Cr6+ and Fe3+ ions

Jiefa Shen,†a   Jialing Mao,†b   Xinlan Ding,†c   Chengze Wu,c   Shenghu Yan,*a   Sai Zhang ORCID logo *a  and  Yue Zhang*ab  

* Corresponding authors

a School of Pharmacy, Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, Jiangsu Province, China
E-mail: ysh@cczu.edu.cn, zhangsai@cczu.edu.cn, zyjs@cczu.edu.cn

b School of Environmental Science and Engineering, Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou University, Changzhou, Jiangsu Province, China

c School of Oversea Education, Changzhou University, Changzhou, Jiangsu Province, China

Abstract

Two novel aggregation-induced emission (AIE) probes were synthesized via Suzuki coupling for the detection of toxic metal ions. Comprehensive characterization confirmed their structures and purity. Both compounds exhibited strong AIE behavior, providing a highly emissive platform in aqueous environments. These probes function as highly sensitive and selective ‘turn-off’ fluorescent sensors for Cr6+ and Fe3+ ions, respectively, via a distinct fluorescence quenching mechanism. Their robust response, even in the presence of competing ions, underscores their potential as reliable tools for environmental monitoring. This work highlights the utility of AIEgens as stable fluorescent platforms for designing efficient sensors for critical metal ions.

Graphical abstract: AIE-active fluorescent probes as ‘turn-off’ sensors for the selective detection of Cr6+ and Fe3+ ions

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Article information

DOI
https://doi.org/10.1039/D5RA05760D
Article type
Paper
Submitted
07 Aug 2025
Accepted
19 Sep 2025
First published
25 Sep 2025
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2025,15, 35460-35467

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AIE-active fluorescent probes as ‘turn-off’ sensors for the selective detection of Cr6+ and Fe3+ ions

J. Shen, J. Mao, X. Ding, C. Wu, S. Yan, S. Zhang and Y. Zhang, RSC Adv., 2025, 15, 35460 DOI: 10.1039/D5RA05760D

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