An immunoelectrochemical platform for the biosensing of ‘Cocaine use’

Tulay Yilmaz Sengel, Emine Guler, Z. Pinar Gumus, Ebru Aldemir, Hakan Coskunol, Huseyin Akbulut, Demet Goen Colak, Ioan Cianga, Shuhei Yamada, Suna Timur*, Takeshi Endo, Yusuf Yagci

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

In the present work, we demonstrate a novel surface design by combination of benzoylecgonine (BE) antibody and poly-L-phenylalanine bearing electroactive macromonomer (EDOT-BTDA-PPhe). This system served as an electro-immunosensor platform for the analysis of cocaine use by detecting both BE and cocaine. To construct the immunosensor, a glassy carbon electrode was covered with EDOT-BTDA-PPhe. Subsequently, BE antibody was immobilized on the polypeptide chains. The surface modifications were confirmed by electrochemical techniques. The immunosensor was used for the electrochemical detection of BE and cocaine as evidence of drug addiction. For both analytes, linearity was obtained between 0.5–25 μM. Finally, the proposed system was successfully employed for the analysis of synthetic biological fluids.

Original languageEnglish
Pages (from-to)310-318
Number of pages9
JournalSensors and Actuators, B: Chemical
Volume246
DOIs
Publication statusPublished - 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

  • Abused drug detection
  • Biochemical screening tool
  • Cocaine
  • Immunosensor
  • Surface modification

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