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Effect of Rotaxane Formation on the Photophysical, Morphological, and Adhesion Properties of Poly[2,7‐(9,9‐dioctylfluorene)‐ alt ‐(5,5'‐bithiophene)] Main‐Chain Polyrotaxanes
Author(s) -
Farcas Aurica,
Ghosh Indrajit,
Grigoras Vasile C.,
Stoica Iuliana,
Peptu Cristian,
Nau Werner M.
Publication year - 2011
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201000727
Subject(s) - rotaxane , fluorescence , polymer chemistry , copolymer , conjugated system , absorption spectroscopy , materials science , photochemistry , absorption (acoustics) , chemistry , crystallography , polymer , supramolecular chemistry , crystal structure , organic chemistry , quantum mechanics , physics , composite material
Abstract In order to investigate the effect of rotaxane formation on the photophysical and morphological properties of π‐conjugated materials, a new main chain polyrotaxane was synthesized through Suzuki coupling between the inclusion complex of 5,5'‐dibromo‐2,2'‐bithiophene with randomly methylated β ‐cyclodextrin and 9,9‐dioctylfluorene‐2,7‐trimethylene diborate. Due to rotaxane formation, a blue shift in the absorption spectra as well as in the fluorescence spectra was observed, while the fluorescence quantum yields and fluorescence lifetimes remained unchanged. This study demonstrates that rotaxane formation can alter the electronic and morphological properties of the threaded copolymer, which is of great interest for electronic applications.