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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Schmidt, T.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Record field in a 10 mm-period bulk high-temperature superconducting undulator
- 2023Benchmark exercise on image-based permeability determination of engineering textiles: Microscale predictionscitations
- 2021Growth and Atomic-Scale Characterization of Ultrathin Silica and Germania Films: The Crucial Role of the Metal Supportcitations
- 2021Micro structure rolling process with laser structured roller tools
- 2020Formation of a 2D meta-stable oxide by differential oxidation of AgCu alloyscitations
- 2020Formation of a 2D Meta-stable Oxide by Differential Oxidation of AgCu Alloyscitations
- 2018Crystallization and microstructure of a glass seal for rapid laser sealing in the system CaO/Al2O3/SiO2citations
- 2017Water-Dispersible Silica-Coated Upconverting Liposomes: Can a Thin Silica Layer Protect TTA-UC against Oxygen Quenching?citations
- 2017Water-Dispersible Silica-Coated Upconverting Liposomescitations
- 2017Chemically modified PTFE particles as solid lubricant additive for the fixation on substrate surfaces
- 2016Vibration damping of lift masts of rack service cranes using composite materials with fibrous or textile reinforcement,Einsatz faser- bzw. textilverstärkter verbundwerkstoffe zur schwingungsdämpfung bei hubmasten von regalbediengeräten
- 2016Design of a highly damped fibre-reinforced lightweight mast for automated storage systems in logistics
- 2010Finishing of aluminium based light weight materials - influence on surface properties
- 2007Thaumasite formation
- 2005Surfactant-mediated epitaxy of Ge on Si(111)citations
Places of action
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article
Water-Dispersible Silica-Coated Upconverting Liposomes
Abstract
© 2017 American Chemical Society.Light upconversion by triplet-triplet annihilation (TTA-UC) in nanoparticles has received considerable attention for bioimaging and light activation of prodrugs. However, the mechanism of TTA-UC is inherently sensitive for quenching by molecular oxygen. A potential oxygen protection strategy is the coating of TTA-UC nanoparticles with a layer of oxygen-impermeable material. In this work, we explore if (organo)silica can fulfill this protecting role. Three synthesis routes are described for preparing water-dispersible (organo)silica-coated red-to-blue upconverting liposomes. Their upconversion properties are investigated in solution and in A549 lung carcinoma cells. Although it was found that the silica offered no protection from oxygen in solution and after uptake in A549 cancer cells, upon drying of the silica-coated liposome dispersion in an excess of (organo)silica precursor, interesting liposome-silica nanocomposite materials were obtained that were capable of generating blue light upon red light excitation in air.