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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1021/la202569q
|2 doi
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|a eng
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| 100 |
1 |
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|a Choi, Yoonjung
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Galvanically replaced hollow Au-Ag nanospheres
|b study of their surface plasmon resonance
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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| 500 |
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|a Date Completed 18.09.2014
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|a Date Revised 04.02.2014
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We synthesized hollow Au-Ag nanospheres (NSs) by employing a galvanic replacement reaction between HAuCl4 and Ag NSs. Uniform Ag NSs with controllable sizes were synthesized as sacrificial templates by a seed-mediated strategy. The atomic ratio of Au to Ag in Au-Ag NSs was tunable by controlling the reagent concentration. UV-vis extinction spectra acquired from well-dispersed colloidal NS solutions were used to investigate the optical properties of the solutions. In addition to a common dipole mode exhibited on most transition metal nanoparticles, we observed a quadrupole plasmon resonance mode when the diameters of the Ag and Au-Ag NSs were larger than 100 nm. The quadrupole and dipole peaks both shifted to longer wavelengths with increased Au content in Au-Ag NSs. The experimental observation of optical properties of hollow Au-Ag NSs was compared with the theoretical simulation using DDA calculation, showing a good agreement
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|a Journal Article
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1 |
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|a Hong, Soonchang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Lichun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kim, Seong Kyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Park, Sungho
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 28(2012), 16 vom: 24. Apr., Seite 6670-6
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:28
|g year:2012
|g number:16
|g day:24
|g month:04
|g pages:6670-6
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|u http://dx.doi.org/10.1021/la202569q
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