Abstract
Merocyanine dye based fluorescent organic compound has been synthesized for the detection of glutamine. The probe showed remarkable fluorescent intensity with glutamine through ICT (Intermolecular Charge Transfer Mechanism). Hence, it is tested for the detection of glutamine using colorimetric and fluorimetric techniques in physiological and neutral pH (7.2). Under optimized experimental conditions, the probe detects glutamine selectively among other interfering biomolecules. The probe has showed a LOD (lower limit of detection) of 9.6 × 10–8 mol/L at the linear range 0–180 µM towards glutamine. The practical application of the probe is successfully tested in human biofluids.
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Acknowledgements
The author VS acknowledged DST, New Delhi for the INSPIRE fellowship (IF180132). Authors thank for financial support under DST-IRHPA, FIST, RUSA-MKU and PURSE for instrument facilities.
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Vijayakumar Sathya: Conceptualization, Writing-original draft. Appadurai Deepa: Revising the article. Lakshmi Kandhan Sangeetha: Revising the article. Venkatesan Srinivasadesikan: Software resources. Shyi-Long Lee: Software resources. Vediappen Padmini: Supervision, Writing-review.
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Highlights
• The organic sensor of merocyanine dye was synthesized by a simple condensation method with moderate yield.
• The dye as a sensor detects the glutamine with high fluorescence intensity.
• The sensor was selectively detects glutamine while interfering other biomolecules and biologically important metals.
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Sathya, V., Deepa, A., Sangeetha, L.K. et al. Development of Optical Biosensor for the Detection of Glutamine in Human Biofluids Using Merocyanine Dye. J Fluoresc 32, 1389–1396 (2022). https://doi.org/10.1007/s10895-022-02937-y
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DOI: https://doi.org/10.1007/s10895-022-02937-y