Surface-independent one-pot chelation of copper ions onto filtration membranes to provide antibacterial properties

Liu, Zhongyun; Hu, Yunxia; Liu, Caifeng; Zhou, Zongyao

doi:10.1039/c6cc06015c

Cited by 38 publications

(28 citation statements)

References 38 publications

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“…The atomic fraction of copper element in the surface coating of Cu-modified PVC is 1.5% (Table 2), which is close to the reported 1.4% on polysulfone and 1.36% on polyvinydienefluoride ultrafiltration membranes [38]. In case of Cu modified PU, there is much less Cu detected than expected from other experimental results.…”

Section: Colloids Interfaces 2019 3 X For Peer Review 6 Of 13supporting

confidence: 84%

Development of Cu-Modified PVC and PU for Catalytic Generation of Nitric Oxide

Azizova

Ray

Mikhalovsky³

et al. 2019

Colloids and Interfaces

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Nitric oxide (NO) generating surfaces are potentially promising for improving haemocompatibility of blood-contacting biomaterials. In the present report, Cu-modified poly(vinyl chloride) (PVC) and polyurethane (PU) were prepared via polydopamine (pDA)-assisted chelation. The copper content on the PVC and PU modified surfaces, assessed by inductively coupled plasma - optical emission spectrometry (ICP-OES), were about 3.86 and 6.04 nmol·cm−2, respectively. The Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) data suggest that copper is attached to the polymer surface through complex formation with pDA. The cumulative leaching of copper from modified PVC and PU during the five day incubation in phosphate buffered saline (PBS), measured by inductively coupled plasma mass spectrometry (ICP-MS), was about 50.7 ppb and 48 ppb, respectively which is within its physiological level. Modified polymers were tested for their ability to catalytically generate NO by decomposing of endogenous S-nitrosothiol (GSNO). The obtained data show that Cu-modified PVC and PU exhibited the capacity to generate physiological levels of NO which could be a foundation for developing new biocompatible materials with NO-based therapeutics.

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Section: Colloids Interfaces 2019 3 X For Peer Review 6 Of 13supporting

confidence: 84%

Development of Cu-Modified PVC and PU for Catalytic Generation of Nitric Oxide

Azizova

Ray

Mikhalovsky³

et al. 2019

Colloids and Interfaces

View full text Add to dashboard Cite

show abstract

“…Inspired by this, we reasoned that DA/PEI co-deposition might form a much denser and more hydrophilic network to better 'seal' the enzymes in the membrane support. On the other hand, the addition of copper ions could also accelerate DA polymerization even at acidic pH [25][26][27]. Additionally, it has been found that the nano-coppers could facilitate the electron transfer in the catalytic reaction of 2,4,6-Trichlorophenol by laccase [28], hence we hypothesize DA/Cu 2+ co-deposition may benefit laccase activity and micro-pollutants removal.…”

Section: Introductionmentioning

confidence: 78%

“…Especially for the DA/PEI co-deposition, this kind of coating layer could even be used for NF membrane fabrication after cross-linking [24], implying that the PDA/PEI layer was dense enough to 'seal' the enzyme in the membrane. Besides the higher enzyme loading, the PDA/PEI and PDA/Cu 2+ coatings also showed better anti-bacterial properties compared with the single PDA coating because PEI molecules and copper ions carried antibacterial ability [27,32]. As seen in Fig.…”

Section: Enzyme Loading Activity and Permeability Of Biocatalytic Mementioning

confidence: 90%

“…S2 †, after storage for 15 days, several bacterial colonies showed up on membrane surface with single PDA coating, while no visible bacterial colony was observed on the membrane with co-depositions. Moreover, it was reported that compared with the PDA layer, the PDA/PEI layer showed better stability under strongly alkaline conditions because of the covalent bonding between PDA and PEI [31], and the PDA/Cu 2+ layer was more stable at acidic pH [25][26][27]. All of these properties for the biocatalytic membranes with co-deposition can improve their stability in a long-term operation.…”

Section: Enzyme Loading Activity and Permeability Of Biocatalytic Mementioning

confidence: 98%

“…We hypothesized that the in-situ product removal from the membrane during the reaction could break this trade-off, and thus the bifacial EMRs were operated under flow-through mode in the following study, where the pressure-induced convective mass transfer might wash the products away during the reaction. The PDA/Cu 2+ coated membrane with the highest BPA removal efficiency was selected to evaluate the bifacial EMR's performance in flow-through mode since it has been proved that the copper release from such membrane was hundred times lower than the limit value in drinking water [27]. As seen in Fig.…”

Section: Bpa Removal In Bifacial Emrs Under Contact Modementioning

confidence: 99%

See 2 more Smart Citations

Mussel-inspired co-deposition to enhance bisphenol A removal in a bifacial enzymatic membrane reactor

Cao

Luo

Woodley

et al. 2018

Chemical Engineering Journal

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Substrate‐Independent and Re‐Writable Surface Patterning by Combining Polydopamine Coatings, Silanization, and Thiol‐Ene Reaction

Scheiger

Wang

et al. 2021

Adv Funct Materials

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Polydopamine coating is a unique, simple, and substrate-independent surface functionalization strategy. Techniques for secondary functionalization, patterning, and re-functionalization of polydopamine modified materials are important to broaden the scope of applications of such materials in a variety of fields. Here, a facile and substrate-independent strategy for surface functionalization and patterning is presented. This approach combines the advantages of three important methods: facile and substrateindependent polydopamine coating, versatile gas phase silanization, and rapid thiol-ene photoclick reaction for patterning. They demonstrate equally efficient functionalization and patterning of diverse materials, such as glass, polytetrafluoroethylene, aluminum, polypropylene, or polyethylene. They also show the possibility of controlled chemical removal of the patterns or surface functionalization by treatment with tetrabutylammonium fluoride, which allows re-modification or re-patterning of the substrate. Thus, this universal and powerful approach for substrate independent surface modification and patterning can significantly facilitate the development of novel functional materials and devices useful for various applications.

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Surface-independent one-pot chelation of copper ions onto filtration membranes to provide antibacterial properties

Abstract: Surface-independent one-pot chelation of copper ions onto filtration membranes to provide antibacterial properties.

Cited by 38 publications

References 38 publications

Development of Cu-Modified PVC and PU for Catalytic Generation of Nitric Oxide

Development of Cu-Modified PVC and PU for Catalytic Generation of Nitric Oxide

Mussel-inspired co-deposition to enhance bisphenol A removal in a bifacial enzymatic membrane reactor

Substrate‐Independent and Re‐Writable Surface Patterning by Combining Polydopamine Coatings, Silanization, and Thiol‐Ene Reaction

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