Detection of ascorbic acid by fluorescence probe based on graphene quantum dots

被引：0
|
作者：
Zhao L.-M. [1 ]
Chen L.-N. [2 ]
Zhao S.-L. [2 ]
机构：
[1] Quality and Technical Supervision, Inspection and Testing Center, Anyang
[2] Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources of Education Ministry, College of Chemistry and Pharmacy, Guangxi Normal University, Guilin
来源：
Zhao, Shu-Lin (zhaoshulin001@163.com) | 1600年 / Editorial Office of Chinese Optics卷 / 38期
基金：
中国国家自然科学基金;
关键词：
Ascorbic acid; Fluorescence probe; Graphene quantum dots; Label-free method;
D O I：
10.3788/fgxb20173801.0124
中图分类号：
学科分类号：
摘要：
A label-free fluorescence method based on the fluorescence property of graphene quantum dots (GQDs) was developed for sensitive and selective detection of ascorbic acid (AA). The initial strong blue fluorescence of the GQDs in aqueous solution was effectively quenched upon addition of AA. The quenching mechanism may involve transfer of electrons from AA to GQDs via the redox reaction of AA and GQDs in weak acid solution. The quenching efficiency was linearly proportional to the concentration of AA within the range of 5.0×10-6-7.5×10-5 mol/L with a low detection limit down to 1.0×10-6 mol/L. The proposed sensing system is simple and low-cost with facile experimental operations, and has a high selectivity for AA over a number of possible interfering species. Additionally, this method was successfully applied to the determination of AA in biological samples with satisfactory recoveries (95.2%-115.3%). © 2017, Science Press. All right reserved.
引用
收藏
页码：124 / 131
页数：7
相关论文
共 45 条
  • [1] Ponomarenko L.A., Schedin F., Katsnelson M.I., Et al., Chaotic dirac billiard in graphene quantum dots, Science, 320, 5874, pp. 356-358, (2008)
  • [2] Pan D.Y., Zhang J.C., Li Z., Et al., Hydrothermal route for cutting graphene sheets into blue-luminescent graphene quantum dots, Adv. Mater., 22, 6, pp. 734-738, (2010)
  • [3] Cheng H.H., Zhao Y., Fan Y.Q., Et al., Graphene-quantum-dot assembled nanotubes: a new platform for efficient Raman enhancement, ACS Nano, 6, 3, pp. 2237-2244, (2012)
  • [4] Dong Y.Q., Chen C.Q., Zheng X.T., Et al., One-step and high yield simultaneous preparation of single-and multi-layer graphene quantum dots from CX-72 carbon black, J. Mater. Chem., 22, 18, pp. 8764-8766, (2012)
  • [5] Shen J.H., Zhu Y.H., Yang X.L., Et al., Graphene quantum dots: emergent nanolights for bioimaging, sensors, catalysis and photovoltaic devices, Chem. Commun., 48, 31, pp. 3686-3699, (2012)
  • [6] Lu J., Yeo P.S.E., Gan C.K., Et al., Transforming C<sub>60</sub> molecules into graphene quantum dots, Nat. Nanotechnol., 6, 4, pp. 247-252, (2011)
  • [7] Liu R.L., Wu D.Q., Feng X.L., Et al., Bottom-up fabrication of photoluminescent graphene quantum dots with uniform morphology, J. Am. Chem. Soc., 133, 39, pp. 15221-15223, (2011)
  • [8] Niu Z.Q., Chen J., Hng H.H., Et al., A leavening strategy to prepare reduced graphene oxide foams, Adv. Mater., 24, 30, pp. 4144-4150, (2012)
  • [9] Dong Y.Q., Li G.L., Zhou N.N., Et al., Graphene quantum dot as a green and facile sensor for free chlorine in drinking water, Anal. Chem., 84, 19, pp. 8378-8382, (2012)
  • [10] Bai J.M., Zhang L., Liang R.P., Et al., Graphene quantum dots combined with europium ions as photoluminescent probes for phosphate sensing, Chem. Eur. J., 19, 12, pp. 3822-3826, (2013)
12345