Details
| Original language | English |
|---|---|
| Pages (from-to) | 3-14 |
| Number of pages | 12 |
| Journal | Zeitschrift fur Physikalische Chemie |
| Volume | 233 |
| Issue number | 1 |
| Early online date | 28 Apr 2018 |
| Publication status | Published - 19 Dec 2018 |
Abstract
In the presented work, the molar extinction coefficient of plasmonic heazlewoodite (Ni3S2) nanoparticles and Au-Ni3S2 core-shell nanoparticles is determined for the first time. The results are compared to analogously determined extinction coefficients of pure Au nanocrystals (NCs), which themselves correlate very well with existing literature on the subject. The measured extinction coefficients at the localized surface plasmon resonance (LSPR) maximum wavelength of nickel sulfide particles are similar to the values of equally sized Au NCs. Therefore, considering the lower cost of the heazlewoodite material, it could be a reasonable alternative for optical applications of nanoparticles showing a LSPR in the visible regime of the electromagnetic spectrum. Furthermore, this study shows, that by growing a Ni3S2 shell onto a pure Au nanocrystal a highly tuneable optical material with variable LSPR frequency and molar extinction coefficient is obtained.
Keywords
- colloidal nanocrystals, core-shell nanoparticles, extinction coefficient, localized surface plasmon resonance, nickel sulfide
ASJC Scopus subject areas
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Zeitschrift fur Physikalische Chemie, Vol. 233, No. 1, 19.12.2018, p. 3-14.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Extinction Coefficient of Plasmonic Nickel Sulfide Nanocrystals and Gold-Nickel Sulfide Core-Shell Nanoparticles
AU - Himstedt, Rasmus
AU - Hinrichs, Dominik
AU - Dorfs, Dirk
N1 - Funding information:: D. H. and D. D. acknowledge financial support by the German Research Foundation (DFG research Grant DO 1580/5-1). R. H. is grateful to the Hannover School for Nanotechnology (HSN) for funding. The authors would also like to thank the Laboratory of Nano and Quantum Engineering (LNQE) for the use of the TEM.
PY - 2018/12/19
Y1 - 2018/12/19
N2 - In the presented work, the molar extinction coefficient of plasmonic heazlewoodite (Ni3S2) nanoparticles and Au-Ni3S2 core-shell nanoparticles is determined for the first time. The results are compared to analogously determined extinction coefficients of pure Au nanocrystals (NCs), which themselves correlate very well with existing literature on the subject. The measured extinction coefficients at the localized surface plasmon resonance (LSPR) maximum wavelength of nickel sulfide particles are similar to the values of equally sized Au NCs. Therefore, considering the lower cost of the heazlewoodite material, it could be a reasonable alternative for optical applications of nanoparticles showing a LSPR in the visible regime of the electromagnetic spectrum. Furthermore, this study shows, that by growing a Ni3S2 shell onto a pure Au nanocrystal a highly tuneable optical material with variable LSPR frequency and molar extinction coefficient is obtained.
AB - In the presented work, the molar extinction coefficient of plasmonic heazlewoodite (Ni3S2) nanoparticles and Au-Ni3S2 core-shell nanoparticles is determined for the first time. The results are compared to analogously determined extinction coefficients of pure Au nanocrystals (NCs), which themselves correlate very well with existing literature on the subject. The measured extinction coefficients at the localized surface plasmon resonance (LSPR) maximum wavelength of nickel sulfide particles are similar to the values of equally sized Au NCs. Therefore, considering the lower cost of the heazlewoodite material, it could be a reasonable alternative for optical applications of nanoparticles showing a LSPR in the visible regime of the electromagnetic spectrum. Furthermore, this study shows, that by growing a Ni3S2 shell onto a pure Au nanocrystal a highly tuneable optical material with variable LSPR frequency and molar extinction coefficient is obtained.
KW - colloidal nanocrystals
KW - core-shell nanoparticles
KW - extinction coefficient
KW - localized surface plasmon resonance
KW - nickel sulfide
UR - http://www.scopus.com/inward/record.url?scp=85046651630&partnerID=8YFLogxK
U2 - 10.1515/zpch-2018-1165
DO - 10.1515/zpch-2018-1165
M3 - Article
AN - SCOPUS:85046651630
VL - 233
SP - 3
EP - 14
JO - Zeitschrift fur Physikalische Chemie
JF - Zeitschrift fur Physikalische Chemie
SN - 0942-9352
IS - 1
ER -