Abstract
A white-light-emitting supramolecular complex through supramolecular interactions has been assembled; the white luminescent supramolecular complex exhibits two emission spectra. Based on this, a dual-channel white-light array sensor was constructed. The results show that it can quickly identify and detect nitroaniline isomer pollutants (p-nitroaniline, m-nitroaniline, o-nitroaniline). When these three nitroaniline isomers were added to the supramolecular white-light array sensor, the fluorescence intensity of the white-light complex decreased to varying degrees. Linear discriminant analysis (LDA) showed that the supramolecular white-light array sensor could recognize and distinguish three nitroaniline isomers and could classify mixtures containing different concentrations. Factor 1 of the array had a good linear relationship with the concentration of pollutants, and the detection limit (LOD) was as low as 0.7 μM. The method has good reproducibility and stability. In addition, it can also qualitatively detect the nitroaniline isomers in river water and contaminated rice seedling extract. It provides an ideal platform for constructing multiresponse sensors.
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The data that supports the findings of this study are available in the supplementary material of this article. Data available on request.
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Funding
We thank the National Natural Science Foundation of China (No. 22061009) and the Natural Science Foundation of the Science and Technology Department of Guizhou Province (Grant No. ZK-2021–024) for financial support.
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Shu-Zhen Huang: conceptualization, formal analysis, investigation, methodology, visualization, validation, writing–original draft. Kai-Ni Wei: conceptualization, formal analysis, visualization. Ru-Pei Yang: performing cultivation and extraction of rice seedlings. Hong-Ling Yi: performing the anti-interference experiment. Qing Tang: formal analysis, resources, data curation, methodology. Zhu Tao: term, conceptualization, methodology, supervision, project administration. Ying Huang: term, conceptualization, methodology, supervision, funding acquisition, project administration, writing–review and editing.
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Huang, SZ., Wei, KN., Yang, RP. et al. A white-light-emitting sensor array based on cucurbit[8]uril for quantitative detection of multicomponent nitroaniline isomers. Microchim Acta 190, 460 (2023). https://doi.org/10.1007/s00604-023-06040-2
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DOI: https://doi.org/10.1007/s00604-023-06040-2