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A First Approach to White Organic Electroluminescence Device from a Single Rod‐Coil Poly[thiophene‐ block ‐( N ‐vinylcarbazole)] Diblock Copolymer
Author(s) -
Heo Mihee,
Kim Jonggi,
Kim Jin Young,
Yang Changduk
Publication year - 2010
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201000398
Subject(s) - electroluminescence , copolymer , materials science , thiophene , polymer chemistry , band gap , electromagnetic coil , optoelectronics , polymer , photochemistry , nanotechnology , chemistry , composite material , organic chemistry , physics , layer (electronics) , quantum mechanics
A rod‐coil block copolymer consisting of poly(3‐hexylthiophene) (P3HT) and poly( N ‐vinylcarbazole) (PVK) ( P3HT‐ b ‐PVK ) in a single molecular architecture is prepared as the first example for WOLEDs. By obtaining the phase separated domains in thin film of the resulting block copolymer, it is possible to suppress energy transfer from PVK as wide bandgap units to P3HT as low bandgap blocks, yielding dual emissions for white electroluminescence with CIE coordination of (0.34, 0.33).