Red-Emitting Polymerizable Guanidinium Dyes as Fluorescent Probes in Molecularly Imprinted Polymers for Glyphosate Detection
The development of methodologies to sense glyphosate has gained momentum due to its toxicological and ecotoxicological effects. In this work, a red-emitting and polymerizable guanidinium benzoxadiazole probe was developed for the fluorescence detection of glyphosate. The interaction of the fluoresce...
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| Format: | Article |
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MDPI AG
2022-03-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/10/3/99 |
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| author | Martha Kimani Víctor Pérez-Padilla Virginia Valderrey Kornelia Gawlitza Knut Rurack |
| author_facet | Martha Kimani Víctor Pérez-Padilla Virginia Valderrey Kornelia Gawlitza Knut Rurack |
| author_sort | Martha Kimani |
| collection | DOAJ |
| description | The development of methodologies to sense glyphosate has gained momentum due to its toxicological and ecotoxicological effects. In this work, a red-emitting and polymerizable guanidinium benzoxadiazole probe was developed for the fluorescence detection of glyphosate. The interaction of the fluorescent probe and the tetrabutylammonium salt of glyphosate was studied via UV/vis absorption and fluorescence spectroscopy in chloroform and acetonitrile. The selective recognition of glyphosate was achieved by preparing molecularly imprinted polymers, able to discriminate against other common herbicides such as 2,4-dichlorophenoxyacetic acid (2,4-D) and 3,6-dichloro-2-methoxybenzoic acid (dicamba), as thin layers on submicron silica particles. The limits of detection of 4.8 µM and 0.6 µM were obtained for the sensing of glyphosate in chloroform and acetonitrile, respectively. The reported system shows promise for future application in the sensing of glyphosate through further optimization of the dye and the implementation of a biphasic assay with water/organic solvent mixtures for sensing in aqueous environmental samples. |
| first_indexed | 2024-03-09T20:00:19Z |
| format | Article |
| id | doaj.art-ba7c1f922cfc446d92121b9e7e25a5a5 |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-09T20:00:19Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-ba7c1f922cfc446d92121b9e7e25a5a52023-11-24T00:45:51ZengMDPI AGChemosensors2227-90402022-03-011039910.3390/chemosensors10030099Red-Emitting Polymerizable Guanidinium Dyes as Fluorescent Probes in Molecularly Imprinted Polymers for Glyphosate DetectionMartha Kimani0Víctor Pérez-Padilla1Virginia Valderrey2Kornelia Gawlitza3Knut Rurack4Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und-prüfung (BAM), Richard-Willstätter Straße 11, 12489 Berlin, GermanyChemical and Optical Sensing Division, Bundesanstalt für Materialforschung und-prüfung (BAM), Richard-Willstätter Straße 11, 12489 Berlin, GermanyChemical and Optical Sensing Division, Bundesanstalt für Materialforschung und-prüfung (BAM), Richard-Willstätter Straße 11, 12489 Berlin, GermanyChemical and Optical Sensing Division, Bundesanstalt für Materialforschung und-prüfung (BAM), Richard-Willstätter Straße 11, 12489 Berlin, GermanyChemical and Optical Sensing Division, Bundesanstalt für Materialforschung und-prüfung (BAM), Richard-Willstätter Straße 11, 12489 Berlin, GermanyThe development of methodologies to sense glyphosate has gained momentum due to its toxicological and ecotoxicological effects. In this work, a red-emitting and polymerizable guanidinium benzoxadiazole probe was developed for the fluorescence detection of glyphosate. The interaction of the fluorescent probe and the tetrabutylammonium salt of glyphosate was studied via UV/vis absorption and fluorescence spectroscopy in chloroform and acetonitrile. The selective recognition of glyphosate was achieved by preparing molecularly imprinted polymers, able to discriminate against other common herbicides such as 2,4-dichlorophenoxyacetic acid (2,4-D) and 3,6-dichloro-2-methoxybenzoic acid (dicamba), as thin layers on submicron silica particles. The limits of detection of 4.8 µM and 0.6 µM were obtained for the sensing of glyphosate in chloroform and acetonitrile, respectively. The reported system shows promise for future application in the sensing of glyphosate through further optimization of the dye and the implementation of a biphasic assay with water/organic solvent mixtures for sensing in aqueous environmental samples.https://www.mdpi.com/2227-9040/10/3/99glyphosateguanidinium receptorsfluorescent probesmolecularly imprinted polymerscore-shell particles |
| spellingShingle | Martha Kimani Víctor Pérez-Padilla Virginia Valderrey Kornelia Gawlitza Knut Rurack Red-Emitting Polymerizable Guanidinium Dyes as Fluorescent Probes in Molecularly Imprinted Polymers for Glyphosate Detection Chemosensors glyphosate guanidinium receptors fluorescent probes molecularly imprinted polymers core-shell particles |
| title | Red-Emitting Polymerizable Guanidinium Dyes as Fluorescent Probes in Molecularly Imprinted Polymers for Glyphosate Detection |
| title_full | Red-Emitting Polymerizable Guanidinium Dyes as Fluorescent Probes in Molecularly Imprinted Polymers for Glyphosate Detection |
| title_fullStr | Red-Emitting Polymerizable Guanidinium Dyes as Fluorescent Probes in Molecularly Imprinted Polymers for Glyphosate Detection |
| title_full_unstemmed | Red-Emitting Polymerizable Guanidinium Dyes as Fluorescent Probes in Molecularly Imprinted Polymers for Glyphosate Detection |
| title_short | Red-Emitting Polymerizable Guanidinium Dyes as Fluorescent Probes in Molecularly Imprinted Polymers for Glyphosate Detection |
| title_sort | red emitting polymerizable guanidinium dyes as fluorescent probes in molecularly imprinted polymers for glyphosate detection |
| topic | glyphosate guanidinium receptors fluorescent probes molecularly imprinted polymers core-shell particles |
| url | https://www.mdpi.com/2227-9040/10/3/99 |
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