Abstract:

This dataset reports data for a protocol to modify the surface of nanoporous gold disks (NPGD) to tune plasmonic resonance. We fabricated monolithic NPGDs in the lab. Gold-silver alloy nanoparticles were incubated with either potassium iodide (KI) or potassium bromide aqueous solutions for 24 hours before dealloying. To produce NPGDs silver was dealloyed for 30 to 270 seconds in 70% nitric acid. The sample was then washed in deionized water. This dataset includes extinction spectra for 2 alloys (Ag82.5Au17.5 and Ag70Au30) without halides, with potassium bromide, and with potassium iodide. Additionally the extinction spectra are provided for the alloy Ag82.5Au17.5 incubated with one of three different concentrations of potassium bromide and potassium iodide. Lastly, Raman spectroscopy data are provided for NPGD without halides, with potassium iodide, and with both potassium iodide and loaded with small gold negatively charged nanoparticles. This dataset is associated with the publication: Zeng, J., Zhao, F., Li, M., Li, C. - H., Lee, T. R., & Shih, W. - C. (2015). Morphological control and plasmonic tuning of nanoporous gold disks by surface modifications. J. Mater. Chem. C, 3(2), 247–252. doi: 10.1039/C4TC02328E.

Suggested Citation:

Jianbo Zeng, Fusheng Zhao, Ming Li, Chien-Hung Li, T. Randall Leeb, Wei-Chuan Shih. 2017. Dataset for: Morphological control and plasmonic tuning of nanoporous gold disks by surface modifications. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7GF0RXF

Publications:

Zeng, J., Zhao, F., Li, M., Li, C.-H., Lee, T. R., & Shih, W.-C. (2015). Morphological control and plasmonic tuning of nanoporous gold disks by surface modifications. J. Mater. Chem. C, 3(2), 247–252. doi:10.1039/c4tc02328e

Purpose:

The purpose of this research was to develop a method to tune the plasmonic resonance of nanoporous gold disks.

Data Parameters and Units:

Excel worksheet Figure 1 corresponds to Figure 2a in the associated publication: wavelength (nm), extinction (a.u.) of Ag82.5Au17.5 alloy without halides, with 0.1 M KBr, with 0.1 M KI. Excel worksheet Figure 2 corresponds to Figure 2b in the associated publication: wavelength (nm), extinction (a.u.) of Ag70Au30 alloy without halides, with 0.1 M KBr, with 0.1 M KI. Excel worksheet Figure 3 corresponds to Figure 4a in the associated publication: wavelength (nm), extinction (a.u.) of Ag82.5Au17.5 alloy at 1, 10, 100 mM KBr. Excel worksheet Figure 4 corresponds to Figure 4b in the associated publication: wavelength (nm), extinction (a.u.) of Ag82.5Au17.5 alloy at 1, 10, 100 mM KI. Excel worksheet Figure 5 corresponds to Figure 6a in the associated publication: wave number, Raman Shift (cm^-1), of NPGD blank (NPGD without halides), NPGD KI (KI-induced NPGD), NPGD KI Au (KI-induced NPGD loaded with small gold nanoparticles).

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