Design of “Turn On” fluorometric nanoprobe based on nitrogen doped graphene quantum dots modified with β-cyclodextrin and vitamin B6 cofactor for selective sensing of dopamine in human serum
[Display omitted] •A novel DA fluorescent probe was developed using β-CD/N@GQDs modified with PYL.•Upon addition of PYL, the yellow emission of probe was decreased.•Attachment of DA to PYL/β-CD@ N@GQDs enhances the blue emission at 420 nm.•Using the fluorescent probe, DA can be detected down to 0.11...
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| Published in | Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 248; p. 119180 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
05.03.2021
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| Subjects | |
| Online Access | Get full text |
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| Abstract | [Display omitted]
•A novel DA fluorescent probe was developed using β-CD/N@GQDs modified with PYL.•Upon addition of PYL, the yellow emission of probe was decreased.•Attachment of DA to PYL/β-CD@ N@GQDs enhances the blue emission at 420 nm.•Using the fluorescent probe, DA can be detected down to 0.117 nM.•The fluorescent probe shows high selectivity towards DA detection.
Herein, a novel and rapid fluorometric nanoprobe was constructed for quantitation of dopamine (DA) in presence of biologically interfering compounds. The nanoprobe based on synthesis of yellow emissive nitrogen doped graphene quantum dots (N@GQDs) by advanced thermal driven oxidation. After that, the synthesized N@GQDs was capped with β-cyclodextrin (β-CD), followed by interaction with pyridoxal (PYL) vitamin B6 cofactor. This interaction resulted in diminishing the yellow fluorescence of β-CD/N@GQDs, and appearance of blue emission peak at 420 nm. Upon addition of DA, the blue emission of β-CD/N@GQDs was increased after excitation at λ = 330 nm. Under optimum conditions, the nanoprobe exhibited a linear range of 0.36–400 nM with limit of detection (LOD) of 0.117 nM. In addition, the fluorescent nanoprobe shows high selectivity and can be used for detection of DA in complicated biological matrices and human serum. This strategy might provide a potential tool for clinical diagnosis and biomedical research for DA related diseases. |
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| AbstractList | [Display omitted]
•A novel DA fluorescent probe was developed using β-CD/N@GQDs modified with PYL.•Upon addition of PYL, the yellow emission of probe was decreased.•Attachment of DA to PYL/β-CD@ N@GQDs enhances the blue emission at 420 nm.•Using the fluorescent probe, DA can be detected down to 0.117 nM.•The fluorescent probe shows high selectivity towards DA detection.
Herein, a novel and rapid fluorometric nanoprobe was constructed for quantitation of dopamine (DA) in presence of biologically interfering compounds. The nanoprobe based on synthesis of yellow emissive nitrogen doped graphene quantum dots (N@GQDs) by advanced thermal driven oxidation. After that, the synthesized N@GQDs was capped with β-cyclodextrin (β-CD), followed by interaction with pyridoxal (PYL) vitamin B6 cofactor. This interaction resulted in diminishing the yellow fluorescence of β-CD/N@GQDs, and appearance of blue emission peak at 420 nm. Upon addition of DA, the blue emission of β-CD/N@GQDs was increased after excitation at λ = 330 nm. Under optimum conditions, the nanoprobe exhibited a linear range of 0.36–400 nM with limit of detection (LOD) of 0.117 nM. In addition, the fluorescent nanoprobe shows high selectivity and can be used for detection of DA in complicated biological matrices and human serum. This strategy might provide a potential tool for clinical diagnosis and biomedical research for DA related diseases. |
| ArticleNumber | 119180 |
| Author | Alqarni, Ali O. El-Wekil, Mohamed M. Alkahtani, Saad A. Mahmoud, Ashraf M. |
| Author_xml | – sequence: 1 givenname: Ali O. surname: Alqarni fullname: Alqarni, Ali O. organization: Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Najran University, Najran, Saudi Arabia – sequence: 2 givenname: Saad A. surname: Alkahtani fullname: Alkahtani, Saad A. organization: Department of Clinical Pharmacy, College of Pharmacy, Najran University, Najran, Saudia Arabia – sequence: 3 givenname: Ashraf M. surname: Mahmoud fullname: Mahmoud, Ashraf M. organization: Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Najran University, Najran, Saudi Arabia – sequence: 4 givenname: Mohamed M. surname: El-Wekil fullname: El-Wekil, Mohamed M. email: mohamed.elwakeel@pharm.aun.edu.eg organization: Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt |
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| Title | Design of “Turn On” fluorometric nanoprobe based on nitrogen doped graphene quantum dots modified with β-cyclodextrin and vitamin B6 cofactor for selective sensing of dopamine in human serum |
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