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240207s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c03392
|2 doi
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|a pubmed24n1304.xml
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|a (NLM)38320303
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|a DE-627
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|e rakwb
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|a eng
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|a Astier, Samuel
|e verfasserin
|4 aut
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|a Controlling Adsorption of Diblock Copolymer Nanoparticles onto an Aldehyde-Functionalized Hydrophilic Polymer Brush via pH Modulation
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|c 2024
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|a Text
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|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 Revised 24.02.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Sterically stabilized diblock copolymer nanoparticles with a well-defined spherical morphology and tunable diameter were prepared by RAFT aqueous emulsion polymerization of benzyl methacrylate at 70 °C. The steric stabilizer precursor used for these syntheses contained pendent cis-diol groups, which means that such nanoparticles can react with a suitable aldehyde-functional surface via acetal bond formation. This principle is examined herein by growing an aldehyde-functionalized polymer brush from a planar silicon wafer and studying the extent of nanoparticle adsorption onto this model substrate from aqueous solution at 25 °C using a quartz crystal microbalance (QCM). The adsorbed amount, Γ, depends on both the nanoparticle diameter and the solution pH, with minimal adsorption observed at pH 7 or 10 and substantial adsorption achieved at pH 4. Variable-temperature QCM studies provide strong evidence for chemical adsorption, while scanning electron microscopy images recorded for the nanoparticle-coated brush surface after drying indicate mean surface coverages of up to 62%. This fundamental study extends our understanding of the chemical adsorption of nanoparticles on soft substrates
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|a Journal Article
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|a Johnson, Edwin C
|e verfasserin
|4 aut
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1 |
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|a Norvilaite, Oleta
|e verfasserin
|4 aut
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1 |
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|a Varlas, Spyridon
|e verfasserin
|4 aut
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1 |
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|a Brotherton, Emma E
|e verfasserin
|4 aut
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1 |
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|a Sanderson, George
|e verfasserin
|4 aut
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1 |
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|a Leggett, Graham J
|e verfasserin
|4 aut
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|a Armes, Steven P
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g (2024) vom: 06. Feb.
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g year:2024
|g day:06
|g month:02
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|u http://dx.doi.org/10.1021/acs.langmuir.3c03392
|3 Volltext
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