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Article

Enhanced Antimould Action of Surface Modified Copper Oxide Nanoparticles with Phenylboronic Acid Surface Functionality

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Department of Chemistry and Biochemistry, University of Hull, Hull HU67RX, UK
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Department of Chemistry, College of Science, University of Babylon, Hilla 51001, Iraq
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Environmental Research Center, University of Babylon, Hilla 51001, Iraq
4
Department of Chemistry, Nazarbayev University, Nursultan 010000, Kazakhstan
*
Author to whom correspondence should be addressed.
Academic Editor: Jose Luis Chiara
Biomimetics 2021, 6(1), 19; https://doi.org/10.3390/biomimetics6010019
Received: 31 December 2020 / Revised: 2 March 2021 / Accepted: 9 March 2021 / Published: 15 March 2021
Antimould agents are widely used in different applications, such as specialty paints, building materials, wood preservation and crop protection. However, many antimould agents can be toxic to the environment. This work aims to evaluate the application of copper oxide nanoparticles (CuONPs) surface modified with boronic acid (BA) terminal groups as antimould agents. We developed CuONPs grafted with (3-glycidyloxypropyl) trimethoxysilane (GLYMO), coupled with 4-hydroxyphenylboronic acid (4-HPBA), which provided a strong boost of their action as antimould agents. We studied the antimould action of the 4-HPBA-functionalized CuONPs against two mould species: Aspergillus niger (A. niger) and Penicillium chrysogenum (P. chrysogenum). The cis-diol groups of polysaccharides expressed on the mould cell walls can form reversible covalent bonds with the BA groups attached on the CuONPs surface. This allowed them to bind strongly to the mould surface, resulting in a very substantial boost of their antimould activity, which is not based on electrostatic adhesion, as in the case of bare CuONPs. The impact of these BA-surface functionalized nanoparticles was studied by measuring the growth of the mould colonies versus time. The BA-functionalized CuONPs showed significant antimould action, compared to the untreated mould sample at the same conditions and period of time. These results can be applied for the development of more efficient antimould treatments at a lower concentration of active agent with potentially substantial economic and environmental benefits. View Full-Text
Keywords: antimould nanoparticles; copper oxide; 4-hydroxyphenylboronic acid; boronic acid; carbohydrates; Aspergillus niger; Penicillium chrysogenum antimould nanoparticles; copper oxide; 4-hydroxyphenylboronic acid; boronic acid; carbohydrates; Aspergillus niger; Penicillium chrysogenum
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MDPI and ACS Style

Henry, P.; Halbus, A.F.; Athab, Z.H.; Paunov, V.N. Enhanced Antimould Action of Surface Modified Copper Oxide Nanoparticles with Phenylboronic Acid Surface Functionality. Biomimetics 2021, 6, 19. https://doi.org/10.3390/biomimetics6010019

AMA Style

Henry P, Halbus AF, Athab ZH, Paunov VN. Enhanced Antimould Action of Surface Modified Copper Oxide Nanoparticles with Phenylboronic Acid Surface Functionality. Biomimetics. 2021; 6(1):19. https://doi.org/10.3390/biomimetics6010019

Chicago/Turabian Style

Henry, Patricia, Ahmed F. Halbus, Zahraa H. Athab, and Vesselin N. Paunov. 2021. "Enhanced Antimould Action of Surface Modified Copper Oxide Nanoparticles with Phenylboronic Acid Surface Functionality" Biomimetics 6, no. 1: 19. https://doi.org/10.3390/biomimetics6010019

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