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231223s2008 xx |||||o 00| ||eng c |
| 024 |
7 |
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|a 10.1021/la8017985
|2 doi
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|a pubmed24n0606.xml
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|a (DE-627)NLM181830698
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|a (NLM)18729530
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Liu, Xiang
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Cross-linked polynorbornene-coated gold nanoparticles
|b dependence of particle stability on cross-linking position and cross-linker structure
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|c 2008
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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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|a Date Completed 28.10.2008
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|a Date Revised 01.10.2008
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a This paper describes the preparation of cross-linked polynorbornene coated gold nanoparticles. The polymer was grown radially from the particle surface using a ring opening metathesis polymerization of norbornene and an electrophilic norbornene ester, which was cross-linked using a variety of diamines. The stability of the cross-linked nanoparticles toward oxidative etching by cyanide was evaluated. The rate of etching decreases as diamines with fewer degrees of conformational freedom are used as cross-linkers. The distance of the cross-linking block from the nanoparticle surface was systematically varied. Nanoparticles with the cross-linked block furthest from the surface were etched most slowly. This is suggested to arise as a result of the polymers adopting a mushroom conformation when the cross-linking block is close to the particle surface, while more distal cross-linking results in more rigid polymer chains that are less permeable to the cyanide etchant. These results provide new insight into how fine-tuning the polymer cross-linking architecture can modulate nanoparticle stability
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Cross-Linking Reagents
|2 NLM
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|a Cyanides
|2 NLM
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| 650 |
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|a Ligands
|2 NLM
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| 650 |
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|a Plastics
|2 NLM
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|a polynorbornen
|2 NLM
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|a Gold
|2 NLM
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| 650 |
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|a 7440-57-5
|2 NLM
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| 700 |
1 |
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|a Basu, Amit
|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 24(2008), 19 vom: 07. Okt., Seite 11169-74
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:24
|g year:2008
|g number:19
|g day:07
|g month:10
|g pages:11169-74
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| 856 |
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|u http://dx.doi.org/10.1021/la8017985
|3 Volltext
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