Journal
TETRAHEDRON LETTERS
Volume 48, Issue 1, Pages 89-93Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2006.11.007
Keywords
oligofluorenes; carbazole; Ullmann coupling; organic light-emitting diode
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A series of N-carbazole end-capped oligofluorenes (CFn, n = 1-3) were synthesized. The 9-position of the carbazole moiety was attached to the terminal ends of the oligofluorene cores using an Ullmann coupling reaction. These molecules exhibit red shifts in absorption and photoluminescence spectra with respect to the number of fluorene units and excellent electrochemical reversibility. They were found to be potential blue light-emitting or hole-transporting materials for organic light-emitting diodes (OLEDs). (c) 2006 Elsevier Ltd. All rights reserved.
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