The Chiroptical Properties of a Thermally Annealed Film of Chiral Substituted Polyfluorene Depend on Film Thickness
| Autor: | E. W. Meijer, Stefan C. J. Meskers, Albertus P. H. J. Schenning, Michael R. Craig, Pascal Jonkheijm |
|---|---|
| Přispěvatelé: | Macromolecular and Organic Chemistry, Macro-Organic Chemistry, Molecular Materials and Nanosystems |
| Rok vydání: | 2003 |
| Předmět: |
chemistry.chemical_classification
Materials science Annealing (metallurgy) Mechanical Engineering chemistry.chemical_element Polymer Fluorene Photochemistry Nitrogen Polyfluorene chemistry.chemical_compound Crystallography chemistry Mechanics of Materials Moiety General Materials Science Nanoscopic scale Circular polarization |
| Zdroj: | Advanced Materials, 15(17), 1435-1438. Wiley-VCH Verlag |
| ISSN: | 1521-4095 0935-9648 |
| DOI: | 10.1002/adma.200305243 |
| Popis: | CD of fluorene homopolymer bearing chiral-3,7-dimethyloctyl sidechains on the 9 position of the fluorene moiety was studied. Chiral polyfluorene films of differing thickness were annealed at 150 DegC for 2 h under a nitrogen atm. The degree of circular polarization in the absorption of light by these films was found to depend strongly on film thickness. This indicates that the exceptionally high dissymmetry ratios obsd. for these films originate on a nanoscopic level and are related to the long range correlation in the polymer chain orientation induced by annealing the film in its liq. cryst. phase at high temp. [on SciFinder (R)] |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text