Stable and efficient loading of silver nanoparticles in spherical polyelectrolyte brushes and the antibacterial effects

Liu, Xiaochi; Xu, Yisheng; Wang, Xiaohan; Shao, Mingfei; Xu, Jun; Wang, Jie; Li, Li; Zhang, Rui; Guo, Xuhong

doi:10.1016/j.colsurfb.2015.01.040

Cited by 15 publications

(13 citation statements)

References 44 publications

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“…As known, the dissociated carboxylic acid groups in PAA chains can provide negative charges to confine counter ions. Thus, when AgNO 3 solution was added into the reaction system, most of the silver ions would be captured by PAA chains through electrostatic interactions [38]. With the addition of NaBH 4 as the reducer, the nucleation and growth of silver nanoparticles would mainly happen around the PAA chains, resulting in SPB with immobilized silver nanoparticles (SPB@Ag).…”

Section: Preparation and Characterization Of Ag@siomentioning

confidence: 99%

Spherical Polyelectrolyte Brushes as Templates to Prepare Hollow Silica Spheres Encapsulating Metal Nanoparticles

Yang

Zhao

et al. 2020

Nanomaterials

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Integrating hollow silica spheres with metal nanoparticles to fabricate multifunctional hybrid materials has attracted increasing attention in catalysis, detection, and drug delivery. Here, we report a simple and general method to prepare hollow silica spheres encapsulating silver nanoparticles (Ag@SiO2) based on spherical polyelectrolyte brushes (SPB), which consist of a polystyrene core and densely grafted poly (acrylic acid) (PAA) chains. SPB were firstly used as nanoreactors to generate silver nanoparticles in situ and then used as sacrificial templates to prepare hybrid hollow silica spheres. The resulted Ag@SiO2 composites exhibit high catalytic activity and good reusability for the reduction of 4-nitrophenol to 4-aminophenol by NaBH4. More importantly, this developed approach can be extended to the encapsulation of other metal nanoparticles such as gold nanoparticles into the hollow silica spheres. This work demonstrates that SPB are promising candidates for the preparation of hollow spheres with encapsulated metal nanoparticles and the resulted hybrid spheres show great potential applications in catalysis.

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Section: Preparation and Characterization Of Ag@siomentioning

confidence: 99%

Spherical Polyelectrolyte Brushes as Templates to Prepare Hollow Silica Spheres Encapsulating Metal Nanoparticles

Yang

Zhao

et al. 2020

Nanomaterials

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“…42 To capitalize on the intrinsic antibacterial activity of silver ions, several groups have worked to directly incorporate silver nanoparticles into their antibacterial coatings. 42,[63][64][65][66][67][73][74][75][81][82][83] These coatings have shown activity against both E. coli and S. aureus, 64,65 minimal cytotoxicity, 42 and promoted the formation of carbonated hydroxyapatite. 66 Beyond these applications, silver nanoparticles have been incorporated into antibacterial coatings using -PEG-heparin-capped silver nanoparticles 75 -Cationic PEG polycarbonate diblock copolymers 77,78 -Cationic copolymers with QAS groups 79,80 Silver -Copper nanoparticles with metal oxides 88,89 poly(styrene-co-acrylic acid), 81 poly(N-isopropylacrylamide) (pNIPAm), 82 poly(N-vinylcarbazole)-poly(acrylic acid), 83 and hydroxyapatite.…”

Section: Metallic-based Coatingsmentioning

confidence: 99%

“…82 Additionally, poly(N-vinylcarbazole)-poly(acrylic acid) spherical polyelectrolyte brushes have been used to encapsulate silver nanoparticles in a layer-by-layer assembly. 83 Liu et al 83 were able to demonstrate that these coatings were capable of long-lasting antimicrobial activity against E. coli and that significantly more silver nanoparticles could be immobilized in the coating through repeat loadings.…”

Section: Metallic-based Coatingsmentioning

confidence: 99%

“…42,[63][64][65][66][67][73][74][75][81][82][83] These coatings have shown activity against both E. coli and S. aureus, 64,65 minimal cytotoxicity, 42 and promoted the formation of carbonated hydroxyapatite. 66 Beyond these applications, silver nanoparticles have been incorporated into antibacterial coatings using poly(styrene-co-acrylic acid), 81 poly(N-isopropylacrylamide) (pNIPAm), 82 poly(N-vinylcarbazole)-poly(acrylic acid), 83 and hydroxyapatite. 63,64 Specifically, poly(styrene-co-acrylic acid) has been used to load silver ions and showed broadspectrum coverage against both E. coli and S. aureus.…”

Section: Metallic-based Coatingsmentioning

confidence: 99%

“…[39][40][41][42][43][61][62][63][64][65][66][67][73][74][75][81][82][83][86][87][88][89][90][91][92][93][94] Most of these applications involve leaching metallic ions in order to disrupt the membrane of bacteria and prevent the proliferation of bacteria on the surface of the device. Specifically, silver ions are capable of interacting with and disrupting the mitochondrial respiratory chain of bacteria, directly impacting ATP production and leading to DNA damage in the bacteria.…”

Section: Metallic-based Coatingsmentioning

confidence: 99%

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Emerging technologies for long-term antimicrobial device coatings: advantages and limitations

Cyphert

Recum

2017

Exp Biol Med (Maywood)

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This work provides an overview, with advantages and limitations of the most recently developed antibacterial coating technologies, enabling other researchers in the field to more easily determine which technology is most advantageous for them to further develop and pursue. AbstractOver the past 20 years, the field of antimicrobial medical device coatings has expanded nearly 30-fold with technologies shifting their focus from diffusion-only based (short-term antimicrobial eluting) coatings to long-term antimicrobial eluting and intrinsically antimicrobial functioning materials. A variety of emergent coatings have been developed with the goal of achieving long-term antimicrobial activity in order to mitigate the risk of implanted device failure. Specifically, the coatings can be grouped into two categories: those that use antibiotics in conjunction with a polymer coating and those that rely on the intrinsic properties of the material to kill or repel bacteria that come into contact with the surface. This review covers both long-term drug-eluting and non-eluting coatings and evaluates the inherent advantages and disadvantages of each type while providing an overview of variety applications that the coatings have been utilized in.

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Current Options and Emerging Biomaterials for Periprosthetic Joint Infection

et al. 2018

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Recent advancements in local antibiotic delivery platforms for preventing and treating PJI include titanium nanotube arrays, synthetic polymers, resorbable hydrogels, and cyclodextrin-based drug delivery options. In particular, cyclodextrins have facilitated great advancements in other clinical disorders and have demonstrated early promise as a future option in the arena of PJI. Novel treatment modalities for PJI optimize the implant surfaces to prevent bacterial biofilm formation or provide prolonged intra-articular antibiotic dosing to eradicate bacteria.

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Stable and efficient loading of silver nanoparticles in spherical polyelectrolyte brushes and the antibacterial effects

Cited by 15 publications

References 44 publications

Spherical Polyelectrolyte Brushes as Templates to Prepare Hollow Silica Spheres Encapsulating Metal Nanoparticles

Spherical Polyelectrolyte Brushes as Templates to Prepare Hollow Silica Spheres Encapsulating Metal Nanoparticles

Emerging technologies for long-term antimicrobial device coatings: advantages and limitations

Current Options and Emerging Biomaterials for Periprosthetic Joint Infection

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