Control and Suppression of Surface Relief Gratings in Liquid-Crystalline Perfluoroalkyl–Azobenzene Polymers

Autor:	Daniela Kropp, Fengxiang You, Christopher K. Ober, Marvin Y. Paik, Lothar Kador, Michael Häckel, Hans-Werner Schmidt
Rok vydání:	2006
Předmět:	chemistry.chemical_classification Materials science Surface relief Liquid crystalline Polymer Condensed Matter Physics Photochemistry Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound chemistry Azobenzene Polymer chemistry Electrochemistry
Zdroj:	Advanced Functional Materials. 16:1577-1581
ISSN:	1616-3028 1616-301X
DOI:	10.1002/adfm.200500711
Popis:	Semifluorinated azobenzene liquid-crystalline side-chain polymers with different perfluoroalkyl lengths are used to develop surface relief gratings (SRGs). With sufficient fluorinated side-chain lengths, surface relief gratings could be completely suppressed due to the self-assembled liquid-crystalline order at the surface. This indicates that there is a surface-dependent nature to SRG formation. The SRG formation from the semifluorinated azobenzene liquid-crystalline side-chain polymers is compared to methoxy-terminated azobenzene side-chain polymers, and results show that the perfluoroalkyl–azobenzene polymers require a longer formation time than the methoxy-terminated polymers.
Databáze:	OpenAIRE
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