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A Novel Ratiometric Fluorescent Probe for Detection of L-glutamic Acid Based on Dual-emission Carbon Dots by Lin Yuan; Lizhen Liu; Yunfeng Bai; Jun Qin; Meng Chen; Feng Feng is a Chemistry article available to read on EtoBox.

What is A Novel Ratiometric Fluorescent Probe for Detection of L-glutamic Acid Based on Dual-emission Carbon Dots about?

In this article, we report for the first time the use of a dual-emission carbon dots (CDs) with orange-yellow fluorescence for the detection of l-glutamic acid (L-Glu). The CDs was synthesized through a facile strategy of one-pot hydrothermal route using o-phenylenediamine (oPD) and oxalic acid. The CDs exhibit two fluorescence emission peaks around 453 nm and 560 nm when the excitation wavelength is at 390 nm. In the existence of L-Glu the fluorescence at 560 nm was decreased, whereas the fluorescence at 453 nm was constant. The fluorescence intensity ratio at 560 nm and 453 nm (F/F) expressed two great linear relationships in the L-Glu concentration range from 0 to 200 μM and 200-400 μM, respectively, with a detection limit (LOD) of about 0.085 μM. In addition, it was used to analyze L-Glu in fetal bovine serum samples successfully, which recoveries were ranging from 97.07 to 103.7%. Those results demonstrate CDs can be further explored in biomedicine studies.

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Author

Lin Yuan; Lizhen Liu; Yunfeng Bai; Jun Qin; Meng Chen; Feng Feng

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Chemistry (Physical Sciences)