Unravelling Thiol's Role in Directing Asymmetric Growth of Au Nanorod-Au Nanoparticle Dimers
| Autor: | Yihan Zhu, Jianfeng Huang, Andrea Fratalocchi, Zhan Shi, Yu Han, Changxu Liu |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Stereochemistry
Polymers Dimer Nanoparticle Metal Nanoparticles Bioengineering 02 engineering and technology 010402 general chemistry Photochemistry Ligands 01 natural sciences Metal chemistry.chemical_compound Nanotechnology General Materials Science Sulfhydryl Compounds chemistry.chemical_classification Nanotubes Ligand Mechanical Engineering General Chemistry Surface Plasmon Resonance 021001 nanoscience & nanotechnology Condensed Matter Physics Asymmetric growth 0104 chemical sciences chemistry Nanocrystal visual_art Thiol visual_art.visual_art_medium Nanorod Gold 0210 nano-technology |
| Zdroj: | Nano letters. 16(1) |
| ISSN: | 1530-6992 |
| Popis: | Asymmetric nanocrystals have practical significance in nanotechnologies but present fundamental synthetic challenges. Thiol ligands have proven effective in breaking the symmetric growth of metallic nanocrystals but their exact roles in the synthesis remain elusive. Here, we synthesized an unprecedented Au nanorod–Au nanoparticle (AuNR–AuNP) dimer structure with the assistance of a thiol ligand. On the basis of our experimental observations, we unraveled for the first time that the thiol could cause an inhomogeneous distribution of surface strains on the seed crystals as well as a modulated reduction rate of metal precursors, which jointly induced the asymmetric growth of monometallic dimers. |
| Databáze: | OpenAIRE |
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