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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2025-07-06 14:53 |
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Conference: Bucharest University Faculty of Physics 2025 Meeting
Section: Polymer Physics
Title:
Semiconducting Polymers for Urea Analysis in Synthetic Saliva
Authors:
Ana-Maria IORDACHE (1), Stefan CARAMIZOIU (1,2), Valentin BARNA (1,2) Bogdan BITA (1,3), Ana-Maria FLOREA (1,3), Cristina Ileana VASILIU (1), Irinela CHILIBON (1), Stefan-Marian IORDACHE (1)
*
Affiliation:
(1) Optospintronics Department, National Institute of Research and Development for Optoelectronics - INOE 2000, 409 Atomistilor, 077125, Magurele, Romania
(2) Department of “Structure of Matter, Atmospheric and Earth Physics, Astrophysics”, Faculty of Physics, University of Bucharest, 405 Atomistilor, 077125, Magurele, Romania;
(3) Department of Electricity, Department of Electricity, Solid State Physics and Biophysics, Faculty of Physics, University of Bucharest, 405 Atomistilor, 077125, Magurele, Romania;
E-mail
ana.iordache@inoe.ro
Keywords:
electrochemical sensor, graphene-based composite, semiconducting polymers, urea detection.
Abstract:
We analyzed five types of sensitive materials (three semiconducting polymers and two polymer-graphene composites) to identify the levels of urea in synthetic saliva. Pyrrole, aniline, thiophene, graphene-pyrrole and graphene-thiophene were electropolymerized directly onto the graphite electrode of a Dropsens microsensor. Cyclic voltammetry was used to analyze the freshly prepared urea samples. The most sensitive polymeric materials in term of LOD and LOQ were the graphene-polypyrrole composite, which had the lowest limit of detection and the graphene-polythiophene composite (LOD = 19.9 mg/mL).
Acknowledgement:
This work was carried out through the Core Program with the National Research Development and Innovation Plan 2022-2027, carried out with the support of MCID, project no. PN 23 05.
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