Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (5): 20240431.doi: 10.7503/cjcu20240431

• Articles:Analytical Chemistry • Previous Articles     Next Articles

Preparation and Performance Study of Fiber-based Organic Electrochemical Transistor Glucose Sensor

LI Jingsong, YANG Sirui, SUN Shimin, LI Zhongbo, ZHANG Lijun()   

  1. Anhui Provincial Engineering Center for High?Performance Biobased Nylons,Anhui Engineering Research Center for Highly Functional Fiber Products for Automobiles,School of Materials and Chemistry,Anhui Agricultural University,Hefei 230006,China
  • Received:2024-09-16 Online:2025-05-10 Published:2024-11-05
  • Contact: ZHANG Lijun E-mail:Ljunzhang@ahau.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(52403218);the Key Project of Natural Science of Anhui Provincial Department of Education, China(KJ2021A0131);the College Student Innovation Training Program of Anhui Agricultural University, China(X202410364365)

Abstract:

Fiber-based organic electrochemical transistors have broad application prospects in the fields of wearable electronic devices and biosensors due to the advantages of being flexible and wearable, low working voltage, high sensitivity, and good biocompatibility. In this study, cotton fiber was used as the raw material for electrodes, and graphene(Gr) and poly(3,4-ethylenedioxythiophene)-sodium polystyrene sulfonate(PEDOT∶PSS) were used to modify the fiber surface to form a layer of PEDOT∶PSS/Gr film on the fiber surface. The resistance of the poly(3,4-ethylenedioxythiophene)-sodium polystyrene sulfonate/graphene/fiber(PEDOT∶PSS/Gr/fiber) was as low as 60 Ω/cm. An organic electrochemical transistor device with stable output performance and high sensitivity was constructed by PEDOT∶PSS/Gr/fiber, and showed good linear response to glucose detection in the range of 1 pmol/L—10 μmol/L, with a detection limitation of 1 pmol/L. In addition, it is demonstrated that the sensor can resist interference from uric acid, ascorbic acid, and common metal ions(K+, Na+, Mg2+), which are common interferences in body fluids. The recovery rate was 87.2%—110% when used to detect saliva samples. This study can provide some technical support for non-invasive detection of blood glucose in diabetes.

Key words: Fiber-based organic electrochemical transistor, Sensor, Glucose, Non-invasive testing

CLC Number: 

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