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Simple and green synthesis of carbon dots (CDs) from valerian root and application of modified mesoporous boehmite (AlOOH) with CDs as a fluorescence probe for determination of imipramine

  • Reyhaneh Sobhani
  • Behzad RezaeiEmail author
  • Marzieh Shahshahanipour
  • Ali A. Ensafi
  • Gholamhossein Mohammadnezhad
Research Paper
  • 32 Downloads

Abstract

A novel, sensitive, rapid, and simple fluorescent probe has been developed based on green-synthesized carbon dots (CDs). In this work, CDs have been synthesized from valerian root by hydrothermal method. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) results confirm the formation of CDs with sizes of less than 10 nm. Fluorescence quenching of CDs was due to the aggregation of the negative charges of CDs with the positive charge of imipramine (IMI) and was then used as the signal for determination of IMI. In addition, the cytotoxicity of CDs was determined using the MTT assay. The probe responses under optimum conditions were linear in the range of 1.0–200.0 ng mL−1 with a limit of detection of 0.6 ng mL−1. Afterwards, mesoporous boehmite (MB) was modified with synthesized CDs (CDs/MB). TEM images confirmed MB modification with CDs. In this case, the variations in the fluorescence signal for different concentrations of IMI increased leading to the higher sensitivity for IMI detection. The limit of detection and linear range for determination of IMI with CDs/MB were obtained as 0.2 and 0.5–200.0 ng mL−1, respectively. To evaluate the fluorescent probe, IMI was measured in real samples.

Graphical abstract

Keywords

Green carbon dots Modified mesoporous boehmite with CDs Fluorescent probe Imipramine 

Notes

Acknowledgments

The authors wish to thank Research Council and Center of Excellence in Sensor and Green Chemistry of Isfahan University of Technology (IUT).

Compliance with ethical standards

Ethical approval

All individual participants’ blood plasma samples were obtained from the clinic center of the Isfahan University of Technology that were approved and supervised by the clinic center Committee. All experiments were performed in accordance with the ethical standards (Helsinki declaration and national, institutional rules and regulations).

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

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

Authors and Affiliations

  • Reyhaneh Sobhani
    • 1
  • Behzad Rezaei
    • 1
    Email author
  • Marzieh Shahshahanipour
    • 1
  • Ali A. Ensafi
    • 1
  • Gholamhossein Mohammadnezhad
    • 1
  1. 1.Department of ChemistryIsfahan University of TechnologyIsfahanIran

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