| In situ ATR-FTIR investigation on the preparation and enantiospecificity of chiral polyelectrolyte multilayers. | |
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MedLine Citation:
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PMID: 20356170 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Chiral polyelectrolyte multilayers (PEMs) consisting of poly(l-lysine) (PLL), poly(N-(S)alkylated 4-vinylpyridinium iodide), or poly(ethyleneimine maltose) (PEI-m) as polycations and poly(styrenesulfonic acid) sodium salt (PSS) or poly(vinyl sulfate) as polyanions, as well as a nonchiral PEM composed of poly(ethyleneimine) (PEI) and PSS were deposited on silicon substrates and poly(tetrafluoroethylene) membranes using the layer-by-layer method. For these PEMs, enantiospecific interaction toward one enantiomer of either l/d-glutamic acid (l/d-GLU), l/d-tryptophan, or l/d-ascorbic acid (l/d-ASC), respectively, was studied under variation of the concentration, pH, and ionic strength. Both deposition and enantiospecific interaction were analyzed by attenuated total reflection Fourier transform infrared spectroscopy. Our results show a significant enantiospecific preference of d-GLU over l-GLU at PEMs containing PLL and of d-ASC over l-ASC at PEMs containing PEI-m. No such enantiospecific preference was found for nonchiral PEMs containing PEI. The enantiospecificity of PEMs of PLL/PSS toward l/d-GLU could be significantly influenced by the ionic strength and pH values, so that increasing attractive electrostatic interactions resulted in higher enantiospecificity. |
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Authors:
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Wuye Ouyang; Martin M?ller; Dietmar Appelhans; Brigitte Voit |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: ACS applied materials & interfaces Volume: 1 ISSN: 1944-8244 ISO Abbreviation: ACS Appl Mater Interfaces Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2010-04-01 Completed Date: 2010-04-22 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101504991 Medline TA: ACS Appl Mater Interfaces Country: United States |
Other Details:
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Languages: eng Pagination: 2878-85 Citation Subset: IM |
Affiliation:
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Leibniz-Institute of Polymer Research Dresden eV (IPF), Hohe Strasse 6, 01069 Dresden, Germany. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Ascorbic Acid
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chemistry* Electrolytes / chemistry* Glutamic Acid / chemistry* Hydrogen-Ion Concentration Osmolar Concentration Permeability Polylysine / chemistry Polymers / chemistry* Spectroscopy, Fourier Transform Infrared Stereoisomerism Sulfonic Acids Tryptophan / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Electrolytes; 0/Polymers; 0/Sulfonic Acids; 0/polyanions; 25104-18-1/Polylysine; 50-81-7/Ascorbic Acid; 56-86-0/Glutamic Acid; 68585-99-9/styrenesulfonic acid polymer; 73-22-3/Tryptophan |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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