Ultrastable Gold Nanoparticles Modified by Bidentate N-Heterocyclic Carbene Ligands
| Autor: | Cathleen M. Crudden, Masakazu Nambo, Alexander Rousina-Webb, Lisa N. Saunders, Michael W. A. MacLean, Chien-Hung Li, Olena V. Zenkina, Renee W. Y. Man, Matthew T. Zamora |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Denticity 010405 organic chemistry Chemistry Nanoparticle General Chemistry Alkylation 010402 general chemistry 01 natural sciences Biochemistry Combinatorial chemistry Catalysis 0104 chemical sciences Nanomaterials chemistry.chemical_compound Colloid and Surface Chemistry Colloidal gold Thiol Thermal stability Carbene |
| Zdroj: | Journal of the American Chemical Society. 140:1576-1579 |
| ISSN: | 1520-5126 0002-7863 |
| DOI: | 10.1021/jacs.7b08516 |
| Popis: | Highly stable gold nanoparticles (Au NPs) functionalized by bidentate N-heterocyclic carbene (NHC) ligands have been synthesized by top-down and bottom-up approaches. A detailed study of the effect of alkylation, denticity, and method of synthesis has led to the production of NHC-stabilized nanoparticles with higher thermal stability than bi- and tridentate thiol-protected Au NPs and than monodentate NHC-stabilized NPs. Importantly, bidentate NHC-protected NPs also displayed unprecedented stability to external thiol, which has been an unsolved problem to date with all nanoparticles. Thus, multidentate NHC ligands are an important, and as yet unrecognized, step forward for the preparation of high stability nanomaterials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|