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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.6b02003
|2 doi
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|a pubmed24n0890.xml
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|a (NLM)27966970
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Bothun, G D
|e verfasserin
|4 aut
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| 245 |
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|a Anionic and Cationic Silver Nanoparticle Binding Restructures Net-Anionic PC/PG Monolayers with Saturated or Unsaturated Lipids
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|c 2017
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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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|a Date Completed 02.08.2017
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|a Date Revised 02.08.2017
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We have examined the interactions between polymer-coated anionic (Ag-COOH) and cationic (Ag-NH) silver nanoparticles, and net-anionic lipid monolayers using dynamic surface pressure measurements. Monolayers composed of saturated or monounsaturated mixtures of anionic phosphatidylglycerol (PG) and zwitterionic phosphatidylcholine (PC) lipids (3:1 molar ratio) were used to determine how lipid packing and monolayer phase state influence the extent of nanoparticle binding and the monolayer response. Anionic Ag-COOH inserted into saturated dipalmitoyl-PC/PG (DPPC/DPPG) and dioleoyl-PC/PG (DOPC/DOPG) monolayers at a low initial surface pressure (10 mN m-1) and caused lipid condensation at high initial surface pressures (20 and 30 mN m-1). Hydrophobic interactions were responsible for insertion, while electrostatic and charge-dipole interactions with PCs were responsible for condensation. In contrast, cationic Ag-NH inserted only into saturated DPPC/DPPG monolayers and otherwise led to lipid condensation. For Ag-NH, adsorption was driven primarily by electrostatic interactions with PGs. Analysis of the subphase Ag and phosphorus concentrations confirmed that Ag-NH had a higher degree binding compared to Ag-COOH, and that the monolayer response was not due to lipid extraction
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Ganji, N
|e verfasserin
|4 aut
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1 |
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|a Khan, I A
|e verfasserin
|4 aut
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|a Xi, A
|e verfasserin
|4 aut
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|a Bobba, C
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 33(2017), 1 vom: 10. Jan., Seite 353-360
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:33
|g year:2017
|g number:1
|g day:10
|g month:01
|g pages:353-360
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|u http://dx.doi.org/10.1021/acs.langmuir.6b02003
|3 Volltext
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