Microchimica Acta

, 186:259 | Cite as

Green emitting carbon dots for sensitive fluorometric determination of cartap based on its aggregation effect on gold nanoparticles

  • Yixia Yang
  • Jingzhou Hou
  • Danqun Huo
  • Xianfeng Wang
  • Jiawei Li
  • Guoli Xu
  • Minghong Bian
  • Qiang HeEmail author
  • Changjun HouEmail author
  • Mei Yang
Original Paper


A fluorometric method was developed for the determination of the insecticide cartap. It is based on the use of green emitting carbon dots (CDs) and gold nanoparticles (Au NPs). The CDs were prepared from phenol and ethylene diamine by a hydrothermal route. They have excitation/emission maxima at 410/513 nm) and a fluorescence quantum yield of 29%. They were characterized by TEM, Raman, XRD, XPS, FT-IR, UV and fluorescence spectroscopies. The green fluorescence of the CDs is strongly reduced by the red-colored Au NPs because of an inner filter effect. Upon addition of cartap, it will cause the aggregation of the Au NPs owing to Au-N interaction between Au NPs and cartap to form purple colored aggregates with spectra that do not overlap the green emission of the CDs. Hence, their fluorescence is restored. Under optimum conditions, the method allows for the quantitation of cartap in the 5–300 nM concentration range, and the detection limit is 3.8 nM. The method was successfully applied to the determination of cartap in spiked real samples and gave satisfactory results.

Graphical abstract

Schematic presentation of green emitting carbon dots for sensitive fluorometric determination of cartap based on its aggregation effect on gold nanoparticles.


Nanomaterial Quantum dots Hydrothermal method Green emission Fluorescence quantum yield Optical probe Fluorescence detection Insecticide IFE 



This work was supported by the Fundamental Research Funds for the Central University (2018CDYJSY0055), Chongqing science and technology commission (CSTC2015 shmszxl20097), the National Natural Science Foundation of China (31171684), the workstation in Sichuan Province(GY2015-01) and sharing fund of Chongqing University’s large equipment.

Compliance with ethical standards

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

Supplementary material

604_2019_3361_MOESM1_ESM.doc (3.1 mb)
ESM 1 (DOC 3187 kb)


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Copyright information

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

Authors and Affiliations

  1. 1.Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqingPeople’s Republic of China
  2. 2.Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education, Faculty of Urban Construction and Environmental EngineeringChongqing UniversityChongqingChina
  3. 3.Liquor Making Biology Technology and Application of Key Laboratory of Sichuan Province, College of BioengineeringSichuan University of Science and EngineeringZigongPeople’s Republic of China

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