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231223s2010 xx |||||o 00| ||eng c |
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7 |
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|a 10.1021/la102611k
|2 doi
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|a eng
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| 100 |
1 |
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|a Popa, Ana Maria
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Dynamic perspective on the function of thermoresponsive nanopores from in situ AFM and ATR-IR investigations
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|c 2010
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|a Text
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|a ƒaComputermedien
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|a Date Completed 03.01.2011
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|a Date Revised 29.09.2010
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|a published: Print
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|a Citation Status MEDLINE
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|a This article describes the morphological and chemical characterization of stimuli-responsive functionalized silicon surfaces provided in parallel by atomic force spectroscopy (AFM) and Fourier transform infrared spectroscopy (FT-IR) enhanced by the single-beam sample reference attenuated total reflection method (SBSR-ATR). The stimuli-responsive behavior of the surfaces was obtained by grafting-to in melt carboxyl-terminated poly-N-isopropylacryl amides (PNIPAAM) with different degree of polymerization (DP) on epoxide-functionalized silicon substrates. The unprecedented real time and in situ physicochemical insight into the temperature-triggered response of the densely packed superficial brushes allowed for the selection of a PNIPAAM with a specific DP as a suitable polymer for the fabrication of silicon membranes exhibiting switchable nanopores. The fabrication process combines the manufacture of nanoporous silicon surfaces and their subsequent chemical functionalization by the grafting-to in melt of the selected polymer. Then, relevant information was obtained in what concerns the chemical modifications behind the topographical changes that drive the functioning of PNIPAAM-based hybrid nanovalves as well as the timescale on which the opening and closing of the nanopores occur
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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1 |
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|a Angeloni, Silvia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bürgi, Thomas
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hubbell, Jeffrey A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Heinzelmann, Harry
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pugin, Raphaël
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 26(2010), 19 vom: 05. Okt., Seite 15356-65
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|g volume:26
|g year:2010
|g number:19
|g day:05
|g month:10
|g pages:15356-65
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|u http://dx.doi.org/10.1021/la102611k
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