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The Chiroptical Properties of a Thermally Annealed Film of Chiral Substituted Polyfluorene Depend on Film Thickness
Author(s) -
Craig M.R.,
Jonkheijm P.,
Meskers S.C.J.,
Schenning A.P.H.J.,
Meijer E.W.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200305243
Subject(s) - polyfluorene , materials science , circular polarization , nanoscopic scale , polymer , polarization (electrochemistry) , absorption (acoustics) , composite material , optics , optoelectronics , nanotechnology , copolymer , chemistry , physics , microstrip
The degree of circular polarization in the absorption of light by a thermally annealed film of chirally substituted polyfluorene depends strongly on the film thickness. This indicates that the exceptionally high dissymmetry ratios observed for these films originate on a nanoscopic level and are related to the long‐range correlation in the polymer chain orientation. Circular polarizations (see Figure) of up to 50 % can be reached.