Size-controllable and uniform gold bumpy nanocubes for single-particle-level surface-enhanced Raman scattering sensitivity
| Autor: | Dae Hong Jeong, Ki Tae Nam, Hyejin Chang, Hye-Eun Lee, Hyo-Yong Ahn, Yoon Young Lee, Eunbyeol Ko |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Chemical substance Nanostructure General Physics and Astronomy Nanoparticle Nanoprobe Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences symbols.namesake symbols Particle Particle size Physical and Theoretical Chemistry 0210 nano-technology Science technology and society Raman scattering |
| Zdroj: | Physical Chemistry Chemical Physics. 21:9044-9051 |
| ISSN: | 1463-9084 1463-9076 |
| DOI: | 10.1039/c9cp00138g |
| Popis: | Gold nanocubes modified to form roughened structures, namely, gold bumpy nanocubes (Au BNCs), with very strong and uniform single-particle surface-enhanced Raman scattering (SERS) intensity were developed. The Au BNCs were synthesized by controlled regrowth, competing with 4-aminothiophenol during gold nanocube growth. Under controlled conditions, Au BNCs of various sizes were successfully generated while maintaining a cubic outline. As the bumpy surfaces of the Au BNCs increased the number of hot spots on a single cubic nanoparticle, these nanoparticles exhibited 15-times stronger SERS than normal cubic nanoparticles. We expect that this unique nanostructure will be applicable in versatile fields as an ultrasensitive SERS nanoprobe or nanoantenna owing to its cubic outline and high uniformity, as well as the ease of particle size adjustment. |
| Databáze: | OpenAIRE |
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