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231224s2011 xx |||||o 00| ||eng c |
| 024 |
7 |
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|a 10.1021/la200459t
|2 doi
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|a eng
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| 100 |
1 |
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|a Han, Xiaogang
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Role of salt in the spontaneous assembly of charged gold nanoparticles in ethanol
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a Date Completed 11.08.2011
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|a Date Revised 26.04.2011
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a This paper investigates the role of salt in the spontaneous linear assembly of charged gold nanoparticles in ethanol and attempts to clear up a misunderstanding on the role of ethanol in this process. Many prior reports have noted that the addition of ethanol to an aqueous solution of gold nanoparticles causes their aggregation into linear assemblies. It was therefore believed that ethanol plays the determining role during the assembly process. In this work, we carried out systematic studies which indicate that residual salt in conjunction with ethanol, instead of ethanol itself, induces the assembly of gold nanoparticles in ethanol. In the absence of salt, gold nanoparticles can be well dispersed in an ethanol solution. Furthermore, we find that the chainlike assemblies can disassemble upon dilution of the salt or the evaporation of ethanol if the gold nanoparticles are protected with a sufficiently strong ligand
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| 650 |
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|a Journal Article
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1 |
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|a Goebl, James
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lu, Zhenda
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yin, Yadong
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 9 vom: 03. Mai, Seite 5282-9
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|x 1520-5827
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|g volume:27
|g year:2011
|g number:9
|g day:03
|g month:05
|g pages:5282-9
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