A5010056417- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Nanocluster Synthesis and Applications
- Nanomaterials for catalytic reactions
- Asymmetric Hydrogenation and Catalysis
- Organometallic Complex Synthesis and Catalysis
- Gold and Silver Nanoparticles Synthesis and Applications
- Nanoplatforms for cancer theranostics
- Catalytic Processes in Materials Science
- Catalytic Cross-Coupling Reactions
- Vanadium and Halogenation Chemistry
- Quantum Dots Synthesis And Properties
- Catalysis and Oxidation Reactions
- Pharmacological Effects and Toxicity Studies
- Dendrimers and Hyperbranched Polymers
- Polyoxometalates: Synthesis and Applications
- Catalysts for Methane Reforming
- Inorganic Chemistry and Materials
- Nanoparticle-Based Drug Delivery
Nagoya University
2017-2022
University of British Columbia
2011-2015
Highly stable gold nanoparticles (Au NPs) functionalized by bidentate N-heterocyclic carbene (NHC) ligands have been synthesized top-down and bottom-up approaches. A detailed study of the effect alkylation, denticity, method synthesis has led to production NHC-stabilized with higher thermal stability than bi- tridentate thiol-protected Au NPs monodentate NPs. Importantly, NHC-protected also displayed unprecedented external thiol, which an unsolved problem date all nanoparticles. Thus,...
Abstract NHC‐Au I complexes were used to prepare stable, water‐soluble, NHC‐protected gold nanoparticles. The charged nature of the nanoparticles permitted analysis by polyacrylamide gel electrophoresis (PAGE), which showed that highly monodisperse, with tunable core diameters between 2.0 and 3.3 nm depending on synthesis conditions. Temporal, thermal, chemical stability determined be high. Treatment thiols caused etching particles after 24 h; however larger plasmonic greater resistance...
Herein we report the first chiral Au10 nanoclusters stabilized by bis N-heterocyclic carbene (bisNHC) ligands. ESI-MS and single-crystal X-ray crystallography confirmed molecular formula to be [Au10(bisNHC)4Br2](O2CCF3)2. The nanocluster adopts a linear edge-shared tetrahedral geometry with prolate shape. DFT calculations provide insight into electronic structure, optical absorption, circular dichroism (CD) characteristics of this unique nanocluster. CD spectra demonstrate chirality transfer...
Abstract NHC‐Au I complexes were used to prepare stable, water‐soluble, NHC‐protected gold nanoparticles. The charged nature of the nanoparticles permitted analysis by polyacrylamide gel electrophoresis (PAGE), which showed that highly monodisperse, with tunable core diameters between 2.0 and 3.3 nm depending on synthesis conditions. Temporal, thermal, chemical stability determined be high. Treatment thiols caused etching particles after 24 h; however larger plasmonic greater resistance...
Small and cool: The mechanism of formation amine-capped Pd nanoparticles from [Pd(acac)2] (acac=acetylacetonate) is elucidated, shown to involve Pd–amido Pd–hydride intermediates. addition a Lewis base results in significant reduction the temperature at which highly monodisperse are isolated.
The preparation of a novel Au6 cluster bearing bidentate mixed carbene-thiolate ligand is presented. length linker between the central benzimidazole and thiolate has strong effect on formation products, with C2 chain giving an cluster, while C3 results in no evidence formation. Density functional theory analysis predicts non-metallic large HOMO-LUMO (3.2-3.6 eV) optical gap.
Thermolysis of Cp*W(NO)(CH2CMe3)(η3-CH2CHCHPh) (1) at 55 °C leads to the loss neopentane and formation 16e η2-allene intermediate complex Cp*W(NO)(η2-CH2═C═CHPh) (A), which has been isolated as its 18e PMe3 adduct (2). Further support for existence allene A is provided by thermolysis 1 in cyclohexene, affords Cp*W(NO)(H)(η3-CH2C(3-cyclohexenyl)CHPh) (3) principal organometallic product. In presence n-heptane, n-octane, or n-pentane, effects C–H activations hydrocarbons exclusively their...
Cerium formate hollow spheres and cerium hydroxycarbonate nanorods with residual groups are effective for reducing palladium(II) salts onto their surfaces. Calcination of the new materials obtained by this surface-assisted reduction method gives highly active PdO/CeO2 nanostructures Pd well dispersed on substrate. Temperature-programmed oxidation experiments showed that these nanomaterials good catalysts low-temperature methane, 50% conversion temperatures (T50%) at ∼300 °C.
Leichter geht's mit Base: Die Bildung aminbedeckter Pd-Nanopartikel aus [Pd(acac)2] (acac=Acetylacetonat) verläuft über Pd-Amido- und Pd-Hydrid-Zwischenstufen. Durch Zusatz einer Lewis-Base kann die Reaktionstemperatur für Synthese monodisperser Nanopartikel deutlich gesenkt werden. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by the authors. Please...
Magic number metal nanoclusters are atomically precise nanomaterials that have enabled unprecedented insight into structure-property relationships in nanoscience. Thiolates the most common ligand, binding to cluster via a staple motif which only central gold atoms metallic state. The lack of other strongly-bound ligands for with different bonding modes has been significant limitation field. Herein, we report previously unknown ligand (0) nanoclusters: N-heterocyclic carbenes (NHCs), feature...
Magic number metal nanoclusters are atomically precise nanomaterials that have enabled unprecedented insight into structure-property relationships in nanoscience. Thiolates the most common ligand, binding to cluster via a staple motif which only central gold atoms metallic state. The lack of other strongly-bound ligands for with different bonding modes has been significant limitation field. Herein, we report previously unknown ligand (0) nanoclusters: N-heterocyclic carbenes (NHCs), feature...
Monodisperse Palladiumnanopartikel können bei niedriger Temperatur in Gegenwart einer Lewis-Base über Pd-Amido- und Pd-Hydrid-Zwischenstufen hergestellt werden. In ihrer Zuschrift auf S. 11512 ff. beleuchten M. O. Wolf et al. den Bildungsmechanismus von aminbedeckten Pd-Nanopartikeln aus [Pd(acac)2] mit NMR-spektroskopischen Studien. Lewis-Basen erhöhen die Nucleophilie des Amins führen zur Entstehung eines Ketamin-Nebenprodukts, was Bildung der reaktiven Zwischenstufen Nanopartikel erleichtert.