Selective colorimetric detection of cysteine based on phenylvinylbisquinoline for its potential implementation in optoelectronic sensors
We report a sensitive colorimetric chemosensor for cysteine based on phenylvinylbisquinoline, named M1. Selectivity for l -cysteine was demonstrated, causing a colorimetric change. The interaction between M1 and l -cysteine suggests a possible click reaction that alters the optical properties, which...
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Veröffentlicht in: | Journal of materials science. Materials in electronics 2023-05, Vol.34 (13), p.1116, Article 1116 |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We report a sensitive colorimetric chemosensor for cysteine based on phenylvinylbisquinoline, named M1. Selectivity for
l
-cysteine was demonstrated, causing a colorimetric change. The interaction between M1 and
l
-cysteine suggests a possible click reaction that alters the optical properties, which are consistent with the predictions in the study of TD-DFT.
1
H RMN, FTIR spectroscopies, and mass spectrometry confirmed the chemical structure obtained by the click reaction. Optical characterization revealed a bathochromic shift and a weakening of the fluorescence of M1 with increasing
l
-cysteine concentration. The detection limit for cysteine was 0.45 mM, the quantification limit was 1.36 mM, and the molar ratio method confirmed a stoichiometry of 1:2 between M1 and
l
-cysteine. This molecule can be used in electronic devices for in situ sensing of
l
-cysteine by a colorimetric shift. |
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ISSN: | 0957-4522 1573-482X |
DOI: | 10.1007/s10854-023-10538-z |