Investigating the viability of sulfur polymers for the fabrication of photoactive, antimicrobial, water repellent coatings

Upton, Rebekah L.; Dop, Romy A.; Sadler, Emma; Lunt, Amy M; Neill, Daniel R.; Hasell, Tom; Crick, Colin R.

doi:10.1039/d2tb00319h

Cited by 15 publications

(11 citation statements)

References 40 publications

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“…Additionally, as reported by Dop et al, polymers that have a glass transition temperature close to the ambient temperature of their environment tend to have better antimicrobial activity, and the S70 polymers gave Sol products with glass transition temperatures close to room temperature, whilst the Insol products had glass transition temperatures too high to detect. 25,26 Finally, NON provides an interesting comparison to TAA and TPA because the latter contain nitrogen which could have an effect on the antimicrobial activity, whilst NON lacks nitrogen. TPA is an alkyne crosslinker whereas TAA is an alkene crosslinker, and it was interesting to observe whether this had an effect.…”

Section: Antimicrobial Activitymentioning

confidence: 99%

“…This agrees with the conclusions of Dop et al in that polymers with glass transition temperatures close to the temperature of the study are more effective in inhibiting viable cells, whereas those that are at a temperature below their glass transition temperature are less effective. 25,26 Interestingly there was little difference between NON and TPA polymers, suggesting that the presence of the nitrogen is not important to the antibacterial activity. The polymers of TAA were less effective than those of TPA and NON, suggesting that the alkyne crosslinkers gave polymers that had greater antibacterial activity, perhaps due to their greater ability to stabilise sulfur.…”

Section: Antimicrobial Activitymentioning

confidence: 99%

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Inverse vulcanisation of self-activating amine and alkyne crosslinkers

Dodd,

Sandy,

Dop

et al. 2023

Polym. Chem.

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Section: Antimicrobial Activitymentioning

confidence: 99%

Section: Antimicrobial Activitymentioning

confidence: 99%

Inverse vulcanisation of self-activating amine and alkyne crosslinkers

Dodd,

Sandy,

Dop

et al. 2023

Polym. Chem.

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“…Furthermore, Cubero-Cardoso and colleagues synthesized high sulfur content polymers using vegetable oils and additional additives for the preparation of antimicrobial and antioxidant materials . Recently, Upton et al reported the fabrication of water-repellent coatings using high sulfur content polymers and silica that were found to inhibit Staphylococcus aureus …”

Section: Introductionmentioning

confidence: 99%

“…11 Recently, Upton et al reported the fabrication of water-repellent coatings using high sulfur content polymers and silica that were found to inhibit Staphylococcus aureus. 12 High sulfur content polymers are often hydrophobic and have limited water solubility. Preparing high sulfur content polymeric nanoparticles could provide a method to increase the water dispersibility of the polymers and to increase the surface area of the material, which could be beneficial for applications in oil adsorption, heavy metal uptake, and novel antimicrobials.…”

Section: ■ Introductionmentioning

confidence: 99%

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Sulfur-Polymer Nanoparticles: Preparation and Antibacterial Activity

Dop

Neill

Hasell

2023

ACS Appl. Mater. Interfaces

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High sulfur content polymers prepared by inverse vulcanization have many reported potential applications, including as novel antimicrobial materials. High sulfur content polymers usually have limited water-solubility and dispersibility due to their hydrophobic nature, which could limit the development of their applications. Herein, we report the formulation of high sulfur content polymeric nanoparticles by a nanoprecipitation and emulsion-based method. High sulfur content polymeric nanoparticles were found to have an inhibitory effect against important bacterial pathogens, including Gram-positive methicillin-resistant Staphylococcus aureus and Gram-negative Pseudomonas aeruginosa. Salt-stable particles were formulated with the addition of a surfactant, which did not inhibit the antibacterial activity of the polymeric particles. Furthermore, the polymeric nanoparticles were found to inhibit S. aureus biofilm formation and exhibited low cytotoxicity against mammalian liver cells. Interaction of the polymeric particles with cellular thiols could be a potential mechanism of action against bacterial cells, as demonstrated by reaction with cysteine as a model thiol. The findings presented demonstrate methods of preparing aqueous dispersions of high sulfur content polymeric nanoparticles that could have useful biological applications.

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Sulfur‐Rich Polymers Coatings

King‐Poole,

Thérien‐Aubin

2024

Adv Funct Materials

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Advancements in the synthesis of sulfur‐rich materials are driving progress across diverse fields owing to the rich and tunable functionalities of those materials. These materials are typically valued for their electrochemical behaviors, high refractive indices, heavy metal affinity, and ability to form dynamic covalent bonding. As a result, their applications span various industries including electronics, catalysis, lithium‐sulfur batteries, water reclamation, and optoelectronics. Moreover, elemental sulfur, a byproduct of the petroleum industry, is produced abundantly, necessitating the exploration of novel valorization routes for polymers made from this feedstock. The unique combination of properties of sulfur‐rich polymers also makes them an ideal platform for the development of high‐performance functional coatings, offering durability and tailored functionalities for protective coatings, thus enhancing materials lifespan and performances in a variety of environmental conditions. The presence of dynamic covalent bonds in many sulfur‐rich polymers enables the creation of self‐healing coatings, while sulfur itself or the comonomers can contribute to antimicrobial, antifouling, and corrosion‐resistant properties. Furthermore, sulfur‐rich polymers have the potential to be used in the design of icephobic and superhydrophobic coatings. This underscores the versatility of sulfur‐rich polymers as a platform for the creation of advanced coatings with superior properties.

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Investigating the viability of sulfur polymers for the fabrication of photoactive, antimicrobial, water repellent coatings

Abstract: Elemental sulfur (S8), a by-product of the petroleum refining industries, possesses many favourable properties including photocatalytic activity and antibacterial activity, in addition to being intrinsically hydrophobic. Despite this, there is...

Cited by 15 publications

References 40 publications

Inverse vulcanisation of self-activating amine and alkyne crosslinkers

Inverse vulcanisation of self-activating amine and alkyne crosslinkers

Sulfur-Polymer Nanoparticles: Preparation and Antibacterial Activity

Sulfur‐Rich Polymers Coatings

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