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231223s2009 xx |||||o 00| ||eng c |
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7 |
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|a 10.1021/la9011108
|2 doi
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|a eng
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| 100 |
1 |
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|a Carino, Emily V
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Quantitative analysis of the stability of pd dendrimer-encapsulated nanoparticles
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| 264 |
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|c 2009
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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 ƒa Online-Ressource
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|2 rdacarrier
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| 500 |
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|a Date Completed 03.11.2009
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|a Date Revised 26.08.2009
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a The stability of Pd dendrimer-encapsulated nanoparticles (DENs) in air-, N(2)-, and H(2)-saturated aqueous solutions is reported. The DENs consisted of an average of 147 atoms per sixth-generation, poly(amidoamine) dendrimer. Elemental analysis and UV-vis spectroscopy indicate that there is substantial oxidation of the Pd DENs in the air-saturated solution, less oxidation in the N(2)-saturated solution, and no detectable oxidation when the DENs are in contact with H(2). Additionally, the stability improves when the DEN solutions are purified by dialysis to remove Pd(2+)-complexing ligands such as chloride. For the air- and N(2)-saturated solutions, most of the oxidized Pd recomplexes to the interiors of the dendrimers, and a lesser percentage escapes into the surrounding solution. The propensity of Pd DENs to oxidize so easily is a likely consequence of their small size and high surface energy
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|a Journal Article
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| 700 |
1 |
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|a Knecht, Marc R
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Crooks, Richard M
|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 25(2009), 17 vom: 01. Sept., Seite 10279-84
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|x 1520-5827
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|g volume:25
|g year:2009
|g number:17
|g day:01
|g month:09
|g pages:10279-84
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|u http://dx.doi.org/10.1021/la9011108
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