0599510 - ÚMCH 2025 RIV CH eng J - Journal Article
Buziková, M. - Zhukouskaya, Hanna - Tomšík, Elena - Vetrík, Miroslav - Kučka, Jan - Hrubý, Martin - Kotek, J.
Catalytic hydrolysis of paraoxon by immobilized copper(II) complexes of 1,4,7-triazacyclononane derivatives.
Polymers. Roč. 16, č. 20 (2024), č. článku 2911. ISSN 2073-4360. E-ISSN 2073-4360
R&D Projects: GA MŠMT(CZ) LUAUS24272; GA MŠMT(CZ) LM2023053; GA MŠMT(CZ) EH22_008/0004607
Institutional support: RVO:61389013
Keywords : paraoxon * nerve agents * macrocyclic copper complexes
OECD category: Polymer science
Impact factor: 4.7, year: 2023 ; AIS: 0.657, rok: 2023
Method of publishing: Open access
Result website:
https://www.mdpi.com/2073-4360/16/20/2911DOI: https://doi.org/10.3390/polym16202911

Organophosphate neuroactive agents represent severe security threats in various scenarios, including military conflicts, terrorist activities and industrial accidents. Addressing these threats necessitates effective protective measures, with a focus on decontamination strategies. Adsorbents such as bentonite have been explored as a preliminary method for chemical warfare agent immobilization, albeit lacking chemical destruction capabilities. Chemical decontamination, on the other hand, involves converting these agents into non-toxic or less toxic forms. In this study, we investigated the hydrolytic activity of a Cu(II) complex, previously studied for phosphate ester hydrolysis, as a potential agent for chemical warfare decontamination. Specifically, we focused on a ligand featuring a thiophene anchor bound through an aliphatic spacer, which exhibited high hydrolytic activity in its Cu(II) complex form in our previous studies. Paraoxon, an efficient insecticide, was selected as a model substrate for hydrolytic studies due to its structural resemblance to specific chemical warfare agents and due to the presence of a chromogenic 4-nitrophenolate moiety. Our findings clearly show the hydrolytic activity of the studied Cu(II) complexes. Additionally, we demonstrate the immobilization of the studied complex onto a solid substrate of Amberlite XAD4 via copolymerization of its thiophene side group with dithiophene. The hydrolytic activity of the resultant material towards paraoxon was studied, indicating its potential utilization in organophosphate neuroactive agent decontamination under mild conditions and the key importance of surface adsorption of paraoxon on the polymer surface.
Permanent Link: https://hdl.handle.net/11104/0356946


Research data: Polymers_Supplementary Materials