Université de Fribourg

Ag Nanoencapsulation for Antimicrobial Applications

Abram, Sarah-Luise ; Gagnon, Jacinthe ; Priebe, Magdalena ; Hérault, Nelly ; Fromm, Katharina M.

In: CHIMIA International Journal for Chemistry, 2018, vol. 72, no. 4, p. 249–252

Biomaterial-related infections remain a significant challenge in medicine. Antimicrobial materials on the basis of Ag nanoparticles represent a promising solution for this issue. Therefore several Ag-containing nanocontainers and nanorattles have been synthesized and characterized that exhibit remarkable control over the release of Ag+ as antimicrobial active species. Their biological...

Université de Fribourg

Antimicrobial silver-filled silica nanorattles with low immunotoxicity in dendritic cells

Priebe, Magdalena ; Widmer, Jérôme ; Löwa, Nina Suhartha ; Abram, Sarah-Luise ; Mottas, Inès ; Woischnig, Anne-Kathrin ; Brunetto, Priscilla S. ; Khanna, Nina ; Bourquin, Carole ; Fromm, Katharina M.

In: Nanomedicine: Nanotechnology, Biology and Medicine, 2017, vol. 13, no. 1, p. 11–22

The progression in the use of orthopedic implants has led to an increase in the absolute number of implant infections, triggering a search for more effective antibacterial coatings. Nanorattles have recently gained interest in biomedical applications such as drug delivery, as encapsulation of the cargo inside the hollow structure provides a physical protection from the surrounding...

Université de Fribourg

Nanorattles or yolk–shell nanoparticles—what are they, how are they made, and what are they good for?

Priebe, Magdalena ; Fromm, Katharina M.

In: Chemistry - A European Journal, 2015, vol. 21, no. 10, p. 3854–3874

The development of nanotechnology has led to the design of cutting-edge nanomaterials with increasing levels of complexity. Although “traditional” solid, uniform nanoparticles are still the most frequently reported structures, new generations of nanoparticles have been constantly emerging over the last several decades. The outcome of this nano-art extends beyond nanomaterials with alternative...

Université de Fribourg

One-pot synthesis and catalytic properties of encapsulated silver nanoparticles in silica nanocontainers

Priebe, Magdalena ; Fromm, Katharina M.

In: Particle & Particle Systems Characterization, 2014, vol. 31, no. 6, p. 645–651

The microemulsion approach constitutes a novel method for preparation of nanorattles, which are nanostructures with a preserved void between an encapsulated core and the surrounding shell of the nanocontainer. A facile one-pot synthesis and encapsulation is demonstrated for silver nanoparticles into silica nanocontainers to form Ag@SiO₂ nanorattles.

Université de Fribourg

A transparent, flexible, ion conductive, and luminescent PMMA ionogel based on a Pt/Eu bimetallic complex and the ionic liquid [Bmim][N(Tf)₂]

Xie, Zai-Lai ; Xu, Hai-Bing ; Geßner, André ; Kumke, Michael U. ; Priebe, Magdalena ; Fromm, Katharina M. ; Taubert, Andreas

In: Journal of Materials Chemistry, 2012, vol. 22, no. 16, p. 8110-8116

Transparent, ion-conducting, luminescent, and flexible ionogels based on the room temperature ionic liquid (IL) 1-butyl-3-methylimidazolium bis(trifluoromethane sulfonyl)imide [Bmim][N(Tf)₂], a PtEu₂ chromophore, and poly(methylmethacrylate) (PMMA) have been prepared. The thermal stability of the PMMA significantly increases with IL incorporation. In particular, the onset weight loss observed...