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Structural isomserism in gold nanoparticles revealed by X-ray crystallography
Revealing structural isomerism in nanoparticles using single-crystal X-ray crystallography remains a largely unresolved task, although it has been theoretically predicted with some experimental clues. Here we report a pair of structural isomers, Au(38T) and Au(38Q), as evidenced using electrospray i...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4667693/ https://www.ncbi.nlm.nih.gov/pubmed/26482704 http://dx.doi.org/10.1038/ncomms9667 |
Sumario: | Revealing structural isomerism in nanoparticles using single-crystal X-ray crystallography remains a largely unresolved task, although it has been theoretically predicted with some experimental clues. Here we report a pair of structural isomers, Au(38T) and Au(38Q), as evidenced using electrospray ionization mass spectrometry, X-ray photoelectron spectroscopy, thermogravimetric analysis and indisputable single-crystal X-ray crystallography. The two isomers show different optical and catalytic properties, and differences in stability. In addition, the less stable Au(38T) can be irreversibly transformed to the more stable Au(38Q) at 50 °C in toluene. This work may represent an important advance in revealing structural isomerism at the nanoscale. |
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