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URN: urn:nbn:de:kobv:517-opus-17111
URL: http://opus.kobv.de/ubp/volltexte/2008/1711/
Koch, Horst ;
Laschewsky, André ;
Ringsdorf, Helmut ;
Teng, Kang
Photodimerization and photopolymerization of amphiphilic cinnamic acid derivatives in oriented monolayers, vesicles and solution
Kurzfassung in Englisch
Cinnamic acid moieties were incorporated into amphiphilic compounds containing one and two alkyl chains. These lipid-like compounds with photoreactive units undergo self-organization to form monolayers at the gas-water interface and bilayer structures (vesicles) in aqueous solutions. The photoreaction of the cinnamic acid moiety induced by 254 nm UV light was investigated in the crystalline state, in monolayers, in vesicles and in solution in organic solvents. The single-chain amphiphiles undergo dimerization to yield photoproducts with twice the molecular weight of the corresponding monomers in organized systems. The photoreaction of amphiphiles containing two cinnamic acid groups occurs via two mechanisms: The intramolecular dimerization produces bicycles, with retention of the molecular weight of the corresponding monomer. The intermolecular reaction leads to oligomeric and polymeric photoproducts. In contrast to the single-chain amphiphiles, photodimerization processes of lipoids containing two cinnamic acid moieties also occur in solution in organic solvents.
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Institut 1: |
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Institut für Chemie |
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Institut 2: |
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Extern |
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DDC-Sachgruppe: |
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Chemie |
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Dokumentart: |
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c Postprint |
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Schriftenreihe: |
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Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, ISSN 1866-8372 |
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Bandnummer: |
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paper 078 |
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Quelle: |
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Die Makromolekulare Chemie. - 187 (1986), pp. 1843-1853. - ISSN (print) 1022-1352, ISSN (online) 1521-3935 |
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Sprache: |
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Englisch |
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Erstellungsjahr: |
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1986 |
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Publikationsdatum: |
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17.09.2008 |
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Bemerkung: |
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first published in:
Die Makromolekulare Chemie. - 187 (1986), 1, pp. 1843-1853
ISSN (print) 1022-1352 ISSN (online) 1521-3935
DOI 10.1002/macp.1986.021870804 |
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Lizenz: |
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