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Photoelectron spect...
Photoelectron spectroscopy studies of the functionalization of a silicon surface with a phosphorylcholine-terminated polymer grafted onto (3-aminopropyl)trimethoxysilane
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- Kristensen, Emma (author)
- Uppsala universitet,Fysiska institutionen,Polymerkemi,Fysik I
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- Nederberg, Fredrik (author)
- Uppsala universitet,Polymerkemi,Fysik I,polymerkemi
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- Rensmo, Håkan (author)
- Uppsala universitet,Fysiska institutionen,Polymerkemi,Fysik I
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- Bowden, Tim (author)
- Uppsala universitet,Polymerkemi,Fysik I,polymerkemi
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- Hilborn, Jöns (author)
- Uppsala universitet,Polymerkemi,Fysik I,polymerkemi
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- Siegbahn, Hans (author)
- Uppsala universitet,Fysiska institutionen,Polymerkemi,Fysik I
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(creator_code:org_t)
- 2006-10-12
- 2006
- English.
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In: Langmuir. - : American Chemical Society (ACS). - 0743-7463 .- 1520-5827. ; 22:23, s. 9651-9657
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- The structure of a biomimetic phosphorylcholine (PC)-functionalized poly(trimethylene carbonate) (PC-PTMC-PC), linked to a silicon substrate through an aminolysis reaction at 120 degrees C with (3-aminopropyl) trimethoxysilane (APTMS), was studied using photoelectron spectroscopy. Two chemical states were found for the unreacted APTMS amine, a neutral state and a protonated state, where the protonated amine on average was situated closer to the silicon substrate than the neutral amine. The experiments also indicated the presence of a third chemical state, where amines interact with unreacted silanol groups. The PTMC chains of the grafted films were found to consist of only 2-3 repeat units, with the grafted chains enriched in the zwitterionic end group, suggesting that these groups are attracted to the surface. This was further supported by the experiments showing that the PC groups were situated deeper within the film.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Keyword
- Physics
- Fysik
- Chemistry
- Kemi
- Inorganic chemistry
Publication and Content Type
- ref (subject category)
- art (subject category)
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