Zinc Phthalocyanine Sensing Mechanism Quantification for Potential Application in Chemical Warfare Agent Detectors

Powroźnik, Paulina; Solecka, Barbara; Pander, Piotr; Jakubik, Wiesław; Dias, Fernando B.; Krzywiecki, Maciej

Abstract

Rapid and accurate detection of lethal volatile compounds is an emerging requirement to ensure the security of the current and future society. Since the threats are becoming more complex, the assurance of future sensing devices’ performance can be obtained solely based on a thorough fundamental approach, by utilizing physics and chemistry together. In this work, we have applied thermal desorption spectroscopy (TDS) to study dimethyl methylophosphate (DMMP, sarin analogue) adsorption on zinc phthalocyanine (ZnPc), aiming to achieve the quantification of the sensing mechanism. Furthermore, we utilize a novel approach to TDS that involves quantum chemistry calculations for the determination of desorption activation energies. As a result, we have provided a comprehensive description of DMMP desorption processes from ZnPc, which is the basis for successful future applications of sarin ZnPc-based sensors. Finally, we have verified the sensing capability of the studied material at room temperature using impedance spectroscopy and took the final steps towards demonstrating ZnPc as a promising sarin sensor candidate.

Citation

Powroźnik, P., Solecka, B., Pander, P., Jakubik, W., Dias, F. B., & Krzywiecki, M. (2022). Zinc Phthalocyanine Sensing Mechanism Quantification for Potential Application in Chemical Warfare Agent Detectors. Sensors, 22(24), Article 9947. https://doi.org/10.3390/s22249947

• Journal Article Type: Article
• Acceptance Date: Dec 14, 2022
• Online Publication Date: Dec 16, 2022
• Publication Date: 2022
• Deposit Date: Apr 17, 2023
• Publicly Available Date: Apr 17, 2023
• Journal: Sensors
• Electronic ISSN: 1424-8220
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 22
• Issue: 24
• Article Number: 9947
• DOI: https://doi.org/10.3390/s22249947
• Public URL: https://durham-repository.worktribe.com/output/1177032