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Polydopamine Ultrathin Film Growth on Mica via In-Situ Polymerization of Dopamine with Applications for Silver-Based Antimicrobial Coatings

The development of polydopamine (PDA) coatings with a nanometer-scale thickness on surfaces is highly desirable for exploiting the novel features arising from the specific structure on the molecular level. Exploring the mechanisms of thin-film growth is helpful for attaining desirable control over t...

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Autores principales: Huang, Zheng-Hao, Peng, Shi-Wei, Hsieh, Shu-Ling, Kirankumar, Rajendranath, Huang, Po-Feng, Chang, Tsao-Ming, Dwivedi, Atul Kumar, Chen, Nan-Fu, Wu, Hao-Ming, Hsieh, Shuchen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7867202/
https://www.ncbi.nlm.nih.gov/pubmed/33535625
http://dx.doi.org/10.3390/ma14030671
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author Huang, Zheng-Hao
Peng, Shi-Wei
Hsieh, Shu-Ling
Kirankumar, Rajendranath
Huang, Po-Feng
Chang, Tsao-Ming
Dwivedi, Atul Kumar
Chen, Nan-Fu
Wu, Hao-Ming
Hsieh, Shuchen
author_facet Huang, Zheng-Hao
Peng, Shi-Wei
Hsieh, Shu-Ling
Kirankumar, Rajendranath
Huang, Po-Feng
Chang, Tsao-Ming
Dwivedi, Atul Kumar
Chen, Nan-Fu
Wu, Hao-Ming
Hsieh, Shuchen
author_sort Huang, Zheng-Hao
collection PubMed
description The development of polydopamine (PDA) coatings with a nanometer-scale thickness on surfaces is highly desirable for exploiting the novel features arising from the specific structure on the molecular level. Exploring the mechanisms of thin-film growth is helpful for attaining desirable control over the useful properties of materials. We present a systematic study demonstrating the growth of a PDA thin film on the surface of mica in consecutive short deposition time intervals. Film growth at each deposition time was monitored through instrumental techniques such as atomic force microscopy (AFM), water contact angle (WCA) analysis, and X-ray photoelectron spectroscopy (XPS). Film growth was initiated by adsorption of the PDA molecules on mica, with subsequent island-like aggregation, and finally, a complete molecular level PDA film was formed on the surface due to further molecular adsorption. A duration of 60−300 s was sufficient for complete formation of the PDA layer within the thickness range of 0.5−1.1 nm. An outstanding feature of PDA ultrathin films is their ability to act as a molecular adhesive, providing a foundation for constructing functional surfaces. We also explored antimicrobial applications by incorporating Ag nanoparticles into a PDA film. The Ag NPs/PDA film was formed on a surgical blade and then characterized and confirmed by SEM-EDS and XPS. The modified film inhibited bacterial growth by up to 42% on the blade after cutting through a pork meat sample.
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spelling pubmed-78672022021-02-07 Polydopamine Ultrathin Film Growth on Mica via In-Situ Polymerization of Dopamine with Applications for Silver-Based Antimicrobial Coatings Huang, Zheng-Hao Peng, Shi-Wei Hsieh, Shu-Ling Kirankumar, Rajendranath Huang, Po-Feng Chang, Tsao-Ming Dwivedi, Atul Kumar Chen, Nan-Fu Wu, Hao-Ming Hsieh, Shuchen Materials (Basel) Article The development of polydopamine (PDA) coatings with a nanometer-scale thickness on surfaces is highly desirable for exploiting the novel features arising from the specific structure on the molecular level. Exploring the mechanisms of thin-film growth is helpful for attaining desirable control over the useful properties of materials. We present a systematic study demonstrating the growth of a PDA thin film on the surface of mica in consecutive short deposition time intervals. Film growth at each deposition time was monitored through instrumental techniques such as atomic force microscopy (AFM), water contact angle (WCA) analysis, and X-ray photoelectron spectroscopy (XPS). Film growth was initiated by adsorption of the PDA molecules on mica, with subsequent island-like aggregation, and finally, a complete molecular level PDA film was formed on the surface due to further molecular adsorption. A duration of 60−300 s was sufficient for complete formation of the PDA layer within the thickness range of 0.5−1.1 nm. An outstanding feature of PDA ultrathin films is their ability to act as a molecular adhesive, providing a foundation for constructing functional surfaces. We also explored antimicrobial applications by incorporating Ag nanoparticles into a PDA film. The Ag NPs/PDA film was formed on a surgical blade and then characterized and confirmed by SEM-EDS and XPS. The modified film inhibited bacterial growth by up to 42% on the blade after cutting through a pork meat sample. MDPI 2021-02-01 /pmc/articles/PMC7867202/ /pubmed/33535625 http://dx.doi.org/10.3390/ma14030671 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Huang, Zheng-Hao
Peng, Shi-Wei
Hsieh, Shu-Ling
Kirankumar, Rajendranath
Huang, Po-Feng
Chang, Tsao-Ming
Dwivedi, Atul Kumar
Chen, Nan-Fu
Wu, Hao-Ming
Hsieh, Shuchen
Polydopamine Ultrathin Film Growth on Mica via In-Situ Polymerization of Dopamine with Applications for Silver-Based Antimicrobial Coatings
title Polydopamine Ultrathin Film Growth on Mica via In-Situ Polymerization of Dopamine with Applications for Silver-Based Antimicrobial Coatings
title_full Polydopamine Ultrathin Film Growth on Mica via In-Situ Polymerization of Dopamine with Applications for Silver-Based Antimicrobial Coatings
title_fullStr Polydopamine Ultrathin Film Growth on Mica via In-Situ Polymerization of Dopamine with Applications for Silver-Based Antimicrobial Coatings
title_full_unstemmed Polydopamine Ultrathin Film Growth on Mica via In-Situ Polymerization of Dopamine with Applications for Silver-Based Antimicrobial Coatings
title_short Polydopamine Ultrathin Film Growth on Mica via In-Situ Polymerization of Dopamine with Applications for Silver-Based Antimicrobial Coatings
title_sort polydopamine ultrathin film growth on mica via in-situ polymerization of dopamine with applications for silver-based antimicrobial coatings
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7867202/
https://www.ncbi.nlm.nih.gov/pubmed/33535625
http://dx.doi.org/10.3390/ma14030671
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