TY - JOUR

T1 - Localized Surface Plasmon Resonances of Various Nickel Sulfide Nanostructures and Au-Ni3S2 Core-Shell Nanoparticles

AU - Himstedt, Rasmus

AU - Rusch, Pascal

AU - Hinrichs, Dominik

AU - Kodanek, Torben

AU - Lauth, Jannika

AU - Kinge, Sachin

AU - Siebbeles, Laurens D.A.

AU - Dorfs, Dirk

N1 - Funding information: The authors thank the Laboratory of Nano and Quantum Engineering (LNQE) for the use of the TEM and Jan F. Miethe for the four-point probe measurements. R.H. and T.K. are grateful to the Hannover School for Nanotechnology (HSN) for funding. D.H., T.K., and D.D. acknowledge financial support from the German Research Foundation (DFG Research Grants DO 1580/3-1 and DO 1580/5-1) and the Volkswagen foundation (Lower Saxony/Israel cooperation, Grant ZN2916). J.L. acknowledges funding by Toyota Motor Europe. *E-mail: dirk.dorfs@pci.uni-hannover.de. ORCID Laurens D. A. Siebbeles: 0000-0002-4812-7495 Dirk Dorfs: 0000-0001-6175-4891 Author Contributions †R.H. and P.R. contributed equally. Funding Deutsche Forschungsgemeinschaft (DFG): Research Grants DO 1580/3-1 and DO 1580/5-1 Hannover School for Nanotechnology (HSN) Volkswagen foundation (ZN2916) Notes The authors declare no competing financial interest.

PY - 2017/9/12

Y1 - 2017/9/12

N2 - In this work, we investigate the occurrence of localized surface plasmon resonances (LSPRs) in different nickel sulfide nanostructures. Therefore, spherical and anisotropic nickel sulfide nanoparticles (NPs) are synthesized and analyzed regarding their optical properties by UV/vis/NIR and transient absorption spectroscopy. Furthermore, new pathways for the synthesis of spherical Ni3S2 nanodots with an extremely narrow size distribution, as well as Au-Ni3S2 core-shell NPs with controllable shell thickness, are presented. Our results show that NPs of different metallic nickel sulfide phases like Ni3S2 and Ni3S4 exhibit LSPR bands in the visible regime of the electromagnetic spectrum, which possibly makes them a comparably cheaper alternative to NPs consisting of noble metals like Au and Ag. In case of the presented plasmonic core-shell particles, the resonance frequency of the plasmon can be tuned between those of pure gold and pure Ni3S2 NPs by varying the Ni3S2 shell thickness.

AB - In this work, we investigate the occurrence of localized surface plasmon resonances (LSPRs) in different nickel sulfide nanostructures. Therefore, spherical and anisotropic nickel sulfide nanoparticles (NPs) are synthesized and analyzed regarding their optical properties by UV/vis/NIR and transient absorption spectroscopy. Furthermore, new pathways for the synthesis of spherical Ni3S2 nanodots with an extremely narrow size distribution, as well as Au-Ni3S2 core-shell NPs with controllable shell thickness, are presented. Our results show that NPs of different metallic nickel sulfide phases like Ni3S2 and Ni3S4 exhibit LSPR bands in the visible regime of the electromagnetic spectrum, which possibly makes them a comparably cheaper alternative to NPs consisting of noble metals like Au and Ag. In case of the presented plasmonic core-shell particles, the resonance frequency of the plasmon can be tuned between those of pure gold and pure Ni3S2 NPs by varying the Ni3S2 shell thickness.

UR - http://www.scopus.com/inward/record.url?scp=85029319599&partnerID=8YFLogxK

U2 - 10.1021/acs.chemmater.7b02259

DO - 10.1021/acs.chemmater.7b02259

M3 - Article

AN - SCOPUS:85029319599

VL - 29

SP - 7371

EP - 7377

JO - Chemistry of materials

JF - Chemistry of materials

SN - 0897-4756

IS - 17

ER -