Publications by authors named "A van Blaaderen"
Article Synopsis
- * Researchers used a technique involving sulfonate functionalized N-heterocyclic carbene (NHC) Ir complexes and a special structural framework called a G-sphere to create these nanoclusters through hydrogen reduction.
- * The resulting nanoclusters (1.8 ± 0.4 nm) exhibited a narrow size distribution and were highly effective as catalysts for hydrogenating 4-nitrostyrene, showcasing superior selectivity compared to larger, non-encapsulated Ir clusters.
The shape of Au nanoparticles (NPs) plays a crucial role for applications in, amongst others, catalysis, electronic devices, biomedicine, and sensing. Typically, the deformation of the morphology of Au NPs is the most significant cause of loss of functionality. Here, we systematically investigate the thermal stability of Au nanotriangles (NTs) coated with (mesoporous) silica shells with different morphologies (core-shell (CS): Au NT@mSiO/yolk-shell (YS): Au NT@mSiO) and compare these to 'bare' nanoparticles (Au NTs), by a combination of and/or TEM techniques and spectroscopy methods.
View Article and Find Full Text PDFInvited for the cover of this issue is the group of Professor Bert Weckhuysen at Utrecht University. The image depicts the change in fluorescence color of a resorufin dye molecule when it is protonated and confined inside the micropores of zeolite-β. Read the full text of the article at 10.
View Article and Find Full Text PDFArticle Synopsis
- Researchers used confocal laser scanning microscopy to study the diffusion and molecular accessibility of resorufin dye in large zeolite-β crystals.
- Unlike its behavior in solution, protonated resorufin is highly fluorescent when confined in zeolite micropores, aiding in fluorescence microimaging.
- The study revealed that resorufin diffuses evenly throughout the zeolite, indicating an accessible pore network, and the diffusion coefficient was measured to be 3×10 m/s, with noted impedance at zeolite subunit boundaries.
The photoluminescence (PL) of lanthanide-doped nanocrystals can be quenched by energy transfer to vibrations of molecules located within a few nanometers from the dopants. Such short-range electronic-to-vibrational energy transfer (EVET) is often undesired as it reduces the photoluminescence efficiency. On the other hand, EVET may be exploited to extract information about molecular vibrations in the local environment of the nanocrystals.
View Article and Find Full Text PDF