Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 4, Issue 5, Pages 1009-1018Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc03690a
Keywords
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Funding
- Research Grants Council of Hong Kong Special Administrative Region [T23-713/11]
- Queensland University of Technology (QUT)
- Australian Research Council (ARC) [FT130101337]
- Australian Renewable Energy Agency
- Ministry of Education of Singapore
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Due to their easy availability, low cost and opportunities for exploiting reactions of bromo substituents, 1,3,6,8-tetrabromopyrene has attracted major attention in the organic electronics community for designing and constructing novel classes of pyrene based organic semiconducting functional materials. In the present work, 1,3,6,8-tetrabromo pyrene was transformed into the corresponding tetrasubstituted carbazole and phenothiazine derivatives using the classical Suzuki coupling reaction. These newly synthesized materials with a carbazole substituent (PY-CA) and a phenothiazine substituent (PY-PH) were characterised thoroughly and were successfully used as an active light-emitting layer in organic light emitting diodes which resulted in blue and green emission with promising device performance. PY-CA exhibited the maximum brightness at around 2500 cd m(-2) and the power efficiency of 1.5 lm W-1 while that of PY-PH exhibited 2116 cd m(-2) and 0.45 lm W-1 respectively.
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