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Novel Supramolecular AIE Gel Act as Multi-analytes Sensor Array

Abstract

A novel organic gelator (WJ) based on benzimidazole and acylhydrazone naphthol moities has been designed and synthesized. The organic gelator (WJ) could form stable organogel (WJG) with strong aggregation-induced emission (AIE). Interestingly, the WJG shows multi-stimuli-response for many analytes such as CN-, Al3+ and Fe3+ and L-Cys. Therefore, a multi-analyte sensor array based on WJG has been successfully developed. The WJG presents selective fluorescent and colorimetric response for CN–. Meanwhile, the WJG could selectively identify Fe3+ and Al3+ in gel state. With the addition of Fe3+ the yellow-green AIE of WJG was quenched. In addition, the AIE of WJG could be selectively recovered by adding L-Cys. So the AIE presents on “on-off-on” type by alternatively adding Fe3+ and L-Cys. Moreover, upon the addition of Al3+, the yellow-green AIE of WJG shows a blue shift and changes to blue. The detection limits of the sensor array for CN-, Al3+ and Fe3+ are 3.02 × 10-6 M, 5.78 × 10-8 M, 3.81 × 10-9 M, respectively. The WJG could act as multi-analytes detection and fluorescent display materials.

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Publication details

The article was received on 15 Aug 2018, accepted on 01 Oct 2018 and first published on 05 Oct 2018


Article type: Paper
DOI: 10.1039/C8NJ04160A
Citation: New J. Chem., 2018, Accepted Manuscript
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    Novel Supramolecular AIE Gel Act as Multi-analytes Sensor Array

    H. Yao, J. Wang, S. Song, Y. Fan, X. Guan, Q. Zhou, T. Wei, Q. Lin and Y. Zhang, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ04160A

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