"

Cookies ussage consent

I agree.

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Screen printed electrodes based on metalloporphyrins and SWCNT for neurotransmitters detection: Raman spectroscopy and cyclic voltammetry investigation

S. M. IORDACHE1, A.-M. IORDACHE1,* , R. BOHILTEA2,* , V. BARNA3, C. RIZEA4, V. CAPATINA5, C. E. A. GRIGORESCU1

Affiliation

  1. National Institute of R&D in Optoelectronics, INOE 2000, 409 Atomistilor St., 077125, Magurele, Jud. Ilfov, Romania
  2. "Carol Davila" University of Medicine and Pharmacy Bucharest, 37 Dionisie Lupu St., 020021, Bucharest, Romania
  3. University of Bucharest, Faculty of Physics,405 Atomistilor St., P.O. Box MG-38, 077125, Magurele, Romania
  4. Roxy Veterinary S.R.L., 52A Unirii St., Magurele, 077125, Romania
  5. MGM Star Construct S.R.L., 7B Pancota St., Bucharest, Romania

Abstract

In this article, we explore the Raman characteristics and the electrochemical response of SWCNT-metalloporphyrins biohybrids. The immobilization of metalloporphyrins on the SWCNT surface has proven to result in novel electron donor– acceptor biohybrid structure with a good selectivity for neurotransmitters. SWCNT and porphyrin functionalization of goldbased screen-printed electrodes allows tailoring of the original sensing characteristics by decreasing the oxidation potential and lowering concentration limits, properties that can further be employed in the diagnosis of neurotransmitter-associated diseases. It is shown that only a specific Zn-porphyrin-SWCNT couple is appropriate for an electrochemically sensitive response when they are immobilized on gold screen-printed electrodes (Au-SPE).

Keywords

SWCNT, Metalloporphyrin, Raman spectroscopy, Neurotransmitter, Cyclic voltammetry.

Citation

S. M. IORDACHE, A.-M. IORDACHE, R. BOHILTEA, V. BARNA, C. RIZEA, V. CAPATINA, C. E. A. GRIGORESCU, Screen printed electrodes based on metalloporphyrins and SWCNT for neurotransmitters detection: Raman spectroscopy and cyclic voltammetry investigation, Optoelectronics and Advanced Materials - Rapid Communications, 15, 11-12, November-December 2021, pp.632-636 (2021).

Submitted at: Nov. 2, 2021

Accepted at: Nov. 24, 2021