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231223s2008 xx |||||o 00| ||eng c |
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|a 10.1021/la703828v
|2 doi
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|a pubmed24n0593.xml
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|a DE-627
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|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Masse, Sylvie
|e verfasserin
|4 aut
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| 245 |
1 |
0 |
|a Modification of the Stöber process by a polyazamacrocycle leading to unusual core-shell silica nanoparticles
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|c 2008
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 05.05.2008
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|a Date Revised 02.04.2008
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a In the view of designing functional nanoparticles, the encapsulation of 1,4,7,10-tetraazacyclododecane (cyclen) within silica nanoparticles using the Stöber process was studied. In the presence of cyclen and tetraethoxysilane (TEOS), silica particles exhibiting an unusual core-shell structure were obtained. On then basis of TEM, DLS, and NMR data, we suggest that the particle core is constituted of hybrid primary nanoparticles resulting from cyclen-silica interactions, whereas the shell formation results from further condensation of unreacted silica precursors. Control experiments performed with the zinc-cyclen complex and ammonia addition suggest that cyclen-TEOS interactions arise from the activation of the silicon alkoxide hydrolysis with the polyazamacrocycle amine groups. These data are discussed in the context of silica biomineralization mechanisms, where polyamine/silica interactions have been shown to play a major role. Moreover, the possibility to control the size and the structure of these nanoparticles makes them promising materials for pharmaceutical applications
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|a Journal Article
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|a Aza Compounds
|2 NLM
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|a Ligands
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|a Macrocyclic Compounds
|2 NLM
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|a Silicon Dioxide
|2 NLM
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|a 7631-86-9
|2 NLM
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| 700 |
1 |
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|a Laurent, Guillaume
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chuburu, Françoise
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cadiou, Cyril
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Déchamps, Isabelle
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Coradin, Thibaud
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 24(2008), 8 vom: 15. Apr., Seite 4026-31
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:24
|g year:2008
|g number:8
|g day:15
|g month:04
|g pages:4026-31
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|u http://dx.doi.org/10.1021/la703828v
|3 Volltext
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