In:
Macromolecular Rapid Communications, Wiley, Vol. 28, No. 6 ( 2007-03-16), p. 772-779
Abstract:
In comparison with poly(9,9‐dialkylfluorene)s widely used in organic optoelectronic devices, poly(9,9‐dialkylfluoreneethynylene)s ( PFEs ) have attracted less attention partly because of their poor fluorescence quantum yield (FQY) in the solid state. In order to improve the FQY, a 1,4‐bis(perfluorohexyl)benzene (BFB) unit was introduced to PFEs , and the results showed that the absolute FQY in the solid state was dependent on the mol‐% of the BFB unit in the copolymers. When mol‐% was 40 and 50%, respectively, the absolute FQY had greatly increased from 4.9% of PFE to 7.8 and 17.4% of the copolymers, respectively. For comparison, a 1,4‐dihexylbenzene (DHB) unit was also introduced to PFE , whereas the obtained copolymer showed the absolute FQY of 3.8%, suggesting that the DHB unit was not suitable for improvement of the FQY of PFEs . Electrochemically, the PFE containing BFB units showed lower reduction potential than that of PFE . All the fluorine‐containing polymers have good thermal stability. magnified image
Type of Medium:
Online Resource
ISSN:
1022-1336
,
1521-3927
DOI:
10.1002/marc.200600786
Language:
English
Publisher:
Wiley
Publication Date:
2007
detail.hit.zdb_id:
1475027-2
detail.hit.zdb_id:
1176770-4
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