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Huang D, Qi H, Jing J, Sami R, Jing T, Alsufyani SJ, Benajiba N, Madkhali N. A Continuously Tunable Full-Color Emission Nitrogen-Doped Carbon Dots and for Ultrasensitive and Highly Selective Detection of Ascorbic Acid. NANOMATERIALS 2022; 12:nano12040693. [PMID: 35215021 PMCID: PMC8874706 DOI: 10.3390/nano12040693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 11/16/2022]
Abstract
Nitrogen-doped carbon dots exhibiting excitation-dependent full-color emissions (F-NCDs) were prepared via the one-step hydrothermal method with citric acid and phenylenediamine. Specifically, the emission wavelength of the F-NCDs tuned from 452 nm to 602 nm due to the introduction of new energy levels by C=O and C=N functional groups. We exploited its stability in illumination, ionic strength, and pH, as well as its specificity, sensitivity, especially in ascorbic acid (AA) detection. F-NCDs could measure the AA concentration in the linear ranges of 0~0.1 and 0.1~1 mmol/L with the detection limit (LOD, S/N = 3) as low as 2.6 nmol/L. Additionally, we successfully detected AA in bovine serum with our F-NCDs and obtained the result within 1 min. Because of full-color emission features, we believe our F-NCDs have a great potential in fluorescent sensor detection.
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Affiliation(s)
- Demin Huang
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China; (D.H.); (T.J.)
| | - Haiyan Qi
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China; (D.H.); (T.J.)
- Correspondence: (H.Q.); (J.J.); (R.S.)
| | - Jing Jing
- School of Medicine and Health, Harbin Institute of Technology, No. 92, West Dazhi Street, Harbin 150000, China
- Correspondence: (H.Q.); (J.J.); (R.S.)
| | - Rokayya Sami
- Department of Food Science and Nutrition, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- Correspondence: (H.Q.); (J.J.); (R.S.)
| | - Tao Jing
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China; (D.H.); (T.J.)
| | - Sultan J. Alsufyani
- Department of Physics, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Nada Benajiba
- Department of Basic Health Sciences, Deanship of Preparatory Year, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Nawal Madkhali
- Department of Physics, College of Sciences, Imam Mohammad Ibn Saud Islamic University (IMISU), Riyadh 11623, Saudi Arabia;
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