Microchimica Acta

, 186:84 | Cite as

Boron doped carbon dots as a multifunctional fluorescent probe for sorbate and vitamin B12

  • Yong Jia
  • Yue Hu
  • Yingping Li
  • Qi Zeng
  • Xiaohui Jiang
  • Zhengjun ChengEmail author
Original Paper


Boron doped carbon dots (B-CD) were synthesized by a one-step hydrothermal method using phenylboronic acid as the starting material. They have an average size of about 3.3 nm, with excitation/emission wavelength of 247/323 nm and a quantum yield of 12%. The B-CD is shown to be viable fluorescent probe for sorbate (PS) and vitamin B12 (VB12). The fluorescence (FL) of the B-CD is quenched in the presence of PS or VB12 mainly coming from inner filter effect (IFE), but Förster resonance energy transfer (FRET) from the B-CD (as a donor) to PS/VB12 (as an acceptor) cannot be excluded. The probe enables PS to be detected by fluorometry with a linear response in the 0.20–24 μM concentration range and a 6.1 nM detection limit (at 3σ/slope). For VB12, the data are 0.20–30 μM and 8.0 nM.

Graphical abstract

Boron doped carbon dots (B-CD) as a probe was prepared by phenylboronic acid as single starting material via one-step hydrothermal method, which has remarkable selectivity and high sensitivity for monitoring PS/VB12. The fluorescence quenching of B-CD by PS/VB12 mainly comes from inner filter effect.


Fluorescent probe Quenching mechanism Sorbic acid Intra-day precision Inter-day precision Fluorescence quenching ratios Selectivity Real sample analysis 



The authors gratefully acknowledge financial support from Sichuan Provincial Science & Technology Fund for Applied Fundamental Research (2016JY0080), Doctor Start-up Fund (15E006) of China West Normal University, and Talent research fund of China West Normal University (17YC012).

Compliance with ethical standards

The author(s) declare that they have no competing interests.

Supplementary material

604_2018_3196_MOESM1_ESM.docx (3.5 mb)
ESM 1 (DOCX 3630 kb)


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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  • Yong Jia
    • 1
    • 2
  • Yue Hu
    • 1
  • Yingping Li
    • 1
  • Qi Zeng
    • 1
  • Xiaohui Jiang
    • 1
  • Zhengjun Cheng
    • 1
    • 2
    Email author
  1. 1.Chemical Synthesis and Pollution Control Key Laboratory of Sichuan ProvinceChina West Normal UniversityNanchongChina
  2. 2.Institute of Applied ChemistryChina West Normal UniversityNanchongChina

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