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Fluorene‐Based Copolymers for Red‐Light‐Emitting Diodes
Author(s) -
Beaupré S.,
Leclerc M.
Publication year - 2002
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/1616-3028(200203)12:3<192::aid-adfm192>3.0.co;2-u
Subject(s) - fluorene , materials science , copolymer , oled , diode , red light , optoelectronics , polymer science , polymer , nanotechnology , composite material , botany , layer (electronics) , biology
The syntheses of new fluorene‐based π‐conjugated copolymers; namely, poly((5,5″‐(3′,4′‐dihexyl‐2,2′;5′,2″‐terthiophene 1′,1′‐dioxide))‐ alt ‐2,7‐(9,9‐dihexylfluorene)) (PFTORT), poly((5,5″″‐(3″,4″‐dihexyl‐2,2′:5′,2′:5″,2‴:5‴,2″″‐quinquethiophene 1″,1″‐dioxide))‐ alt ‐2,7‐(9,9‐dihexylfluorene)) (PFTTORTT), and poly((5,5‐ E ‐α‐(2‐thienyl)methylene)‐2‐thiopheneacetonitrile)‐ alt ‐2,7‐(9,9‐dihexylfluorene)) (PFTCNVT), are reported. In the solid state, PFTORT and PFTCNVT present red–orange emission (with a maximum at 610 nm) while PFTTORTT shows a red emission with a maximum at 666 nm. In all cases, electrochemical measurements have revealed p‐ and n‐dopable copolymers. All these copolymers have been successfully tested in simple light‐emitting diodes and show promising results for orange‐ and red‐light‐emitting devices.