Morphological Evolution of Gold Nanoparticles into Nanodendrites Using Catechol-Grafted Polymer Templates
| Autor: | Kyeong Rak Kim, Cheol Am Hong, Ho Yeon Son, Yoon Sung Nam |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Catechol Materials science General Chemical Engineering Nanotechnology 02 engineering and technology General Chemistry Polymer Photothermal therapy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Article 0104 chemical sciences Catalysis lcsh:Chemistry chemistry.chemical_compound Template chemistry lcsh:QD1-999 Colloidal gold 0210 nano-technology |
| Zdroj: | ACS Omega ACS Omega, Vol 3, Iss 6, Pp 6683-6691 (2018) |
| ISSN: | 2470-1343 |
| Popis: | Morphology, dimension, size, and surface chemistry of gold nanoparticles are critically important in determining their optical, catalytic, and photothermal properties. Although many techniques have been developed to synthesize various gold nanostructures, complicated and multistep procedures are required to generate three-dimensional, dendritic gold nanostructures. Here, we present a simple method to synthesize highly branched gold nanodendrites through the well-controlled reduction of gold ions complexed with a catechol-grafted polymer. Dextran grafted with catechols guides the morphological evolution as a polymeric ligand to generate dendritic gold structures through the interconnection of the spherical gold nanoparticles. The reduction kinetics, which is critical for morphological changes, is controllable using dimethylacetamide, which can decrease the metal-ligand dissociation and gold ion diffusivity. This study suggests that mussel-inspired polymer chemistry provides a simple one-pot synthetic route to colloidal gold nanodendrites that are potentially applicable to biosensing and catalysis. |
| Databáze: | OpenAIRE |
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