Antimicrobial AgNPs composites of gelatin hydrogels crosslinked by ferrocene-containing tetrablock terpolymer

Mu, Shengdong; Liu, Wentao; Zhao, Li; Long, Yanru; Gu, Haibin

doi:10.1016/j.polymer.2019.02.047

Cited by 29 publications

(26 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the AuNPs‐HG‐2 , similar but decreased interactions are expected to take place. Moreover, the long‐time (3 days) soaking treatment could have negative effect on the stability of HG . Thus, the pore size of AuNPs‐HG‐2 is larger than that of AuNPs‐HG‐1 .…”

Section: Resultsmentioning

confidence: 99%

“…Gelatin (Type B, porcine skin) was provided by Chengdu Kelon Chemical Reagent Factory (Chengdu, China). The Fc‐containing homopolymer PNFc (Figure ) and tetrablock terpolymer P(NCHO‐ b ‐NFc‐ b ‐NTEG‐ b ‐NCHO) (Figure ) were prepared following our previous methods . 4‐NP and chloroauric acid (HAuCl 4 ) were purchased from Shanghai Saien Chemical Technology Co., Ltd., Shanghai, China.…”

Section: Methodsmentioning

confidence: 99%

“…The HG crosslinked by P(NCHO‐ b ‐NFc‐ b ‐NTEG‐ b ‐NCHO) was prepared following our previous method . Concretely, P(NCHO‐ b ‐NFc‐ b ‐NTEG‐ b ‐NCHO) (0.404 g) was first dissolved in 1 mL of DMF.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, various carriers have been proposed to immobilize and disperse AuNPs, including fibers and hydrogels . Obviously, the Fc‐containing polymer hydrogels, especially those from natural biopolymer (e.g., gelatin), might be excellent candidates for the preparation of recyclable supported AuNP catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…In our recent study, a polynorbornene‐based tetrablock terpolymer containing aldehyde, Fc, and dentritic triethylene glycol (TEG) groups, P(NCHO‐ b ‐NFc‐ b ‐NTEG‐ b ‐NCHO) (Figure ), was synthesized by the ROMP technique . This copolymer was successfully used as reducing and stabilizing agents for the preparation of silver nanoparticles and was adopted as a crosslinker to fabricate gelatin hydrogels (HGs) through the Schiff's base reaction.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

AuNPs composites of gelatin hydrogels crosslinked by ferrocene‐containing polymer as recyclable supported catalysts

Long

Song

Shi

et al. 2019

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

To fabricate a recyclable supported catalyst based on gold nanoparticles (AuNPs) and gelatin hydrogel (HG) composites, a ferrocene (Fc)-containing tetrablock copolymer [P(NCHO-b-NFc-b-NTEG-b-NCHO)] was used as both reducing and stabilizing agents for AuNPs and as a crosslinker for HG. First, the effects of Fc-containing polymers, including homopolymer PNFc and copolymer P(NCHO-b-NFc-b-NTEG-b-NCHO), and different solvent systems on the morphology and aggregation of AuNPs were examined by using ultraviolet-visible spectroscopy, transmission electron microscopy, and dynamic light scattering. Second, two strategies (blending and soaking) were applied to prepare different AuNPs/HG composites (AuNPs-HG), and their structure and properties were studied by using various techniques including scanning electron microscopy, X-ray diffraction, and thermogravimetry. Finally, the catalytic performance and reusability of AuNPs-HG-1 (via blending) and AuNPs-HG-2 (via soaking) were evaluated utilizing the model catalytic reduction of 4-nitrophenol to 4-aminophenol by NaBH 4 . Results indicated that P(NCHO-b-NFc-b-NTEG-b-NCHO) dissolved in N,Ndimethylformamide was the optimal reductant and stabilizer to prepare AuNPs. The in situ reduction of Au III ions to Au 0 particles was very essential for the fabrication of AuNPs-HG in terms of hydrogel pore size, Au 0 distribution and immobilization stability, and hydrogel thermal stability. Due to the stronger interactions among AuNPs, P(NCHO-b-NFc-b-NTEG-b-NCHO), and gelatin molecules in the blending strategy, AuNPs-HG-1 showed better mechanical stability and catalytic performance and more reusing cycles than AuNPs-HG-2. This work highlights the design and fabrication of robust recyclable supported AuNP catalyst by using eco-friendly Fccontaining HGs.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

AuNPs composites of gelatin hydrogels crosslinked by ferrocene‐containing polymer as recyclable supported catalysts

Long

Song

Shi

et al. 2019

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

show abstract

Preparation, characterization, and antimicrobial activity of ferrocene‐containing polymeric materials

Zampino

Pedotti

Ussia

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

Ferrocenyl(benzyl) imidazole (FcIm) and two related methyl‐imidazolium salts (FcMIm+I– and FcMIm+PF6–) were synthesized for their incorporation into plasticized PVC by solvent casting technique. The obtained materials were investigated for their thermal stability and, compared to pure polymer, films containing ionic ferrocene derivatives in 0.5% w/w loading were found slightly more stable. The pure ferrocene compounds showed antibacterial activity against Staphylococcus epidermis, but not against Escherichia coli, with a maximum for FcMIm+PF6– salt. After incorporation into PVC polymer, antibacterial activity against S. epidermis was observed (by disk diffusion test) only for PVC/FcMIm+PF6– (5% w/w) film, from which a release of 14.6% of the ferrocenilimidazolium cation in aqueous medium was measured after 24 hr.

show abstract

Multi‐Network Poly(β‐cyclodextrin)/PVA/Gelatin/Carbon Nanotubes Composite Hydrogels Constructed by Multiple Dynamic Crosslinking as Flexible Electronic Devices

Liu

2021

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

Multifunctional hydrogels with good stretchability and self-healing properties have attracted considerable attention in the field of flexible electronic devices. However, hydrogels constructed by traditional chemical crosslinking usually have poor mechanical properties and lack self-healing, adhesion, and biocompatibility, which cannot meet the requirements of flexible wearable devices. This work introduced multiple dynamic crosslinking, including borate ester bond, Schiff-base, and host-guest interaction, into polymer networks to fabricate triple-network gelatin/polyvinyl alcohol/carbon nanotube composite hydrogels with good self-healing ability (healing efficiency of 95.0%), mechanical strength (54.6 kPa), stretchability (778%), biocompatibility, conductivity, adhesion, and remodeling properties. Carbon nanotubes can serve as the filler to improve the electrical conductivity of the triple-network hydrogels. The resulting hydrogel can be made into a strain sensor with high strain sensitivity (gauge factor up to 16.0). More importantly, the strain sensor can be used to monitor various human and organ movements. Owing to its good self-healing ability, the self-healed hydrogel sensor also can detect human movements with almost the same electrical signal strength as the original one. This study gives novel insights for the design of multifunctional self-healing hydrogels that have great potential in various application fields such as electronic skins, soft robots, and wearable devices.

show abstract

Antimicrobial AgNPs composites of gelatin hydrogels crosslinked by ferrocene-containing tetrablock terpolymer

Cited by 29 publications

References 67 publications

AuNPs composites of gelatin hydrogels crosslinked by ferrocene‐containing polymer as recyclable supported catalysts

AuNPs composites of gelatin hydrogels crosslinked by ferrocene‐containing polymer as recyclable supported catalysts

Preparation, characterization, and antimicrobial activity of ferrocene‐containing polymeric materials

Multi‐Network Poly(β‐cyclodextrin)/PVA/Gelatin/Carbon Nanotubes Composite Hydrogels Constructed by Multiple Dynamic Crosslinking as Flexible Electronic Devices

Contact Info

Product

Resources

About