Issue 5, 2016

Phenothiazine and carbazole substituted pyrene based electroluminescent organic semiconductors for OLED devices

Abstract

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.

Graphical abstract: Phenothiazine and carbazole substituted pyrene based electroluminescent organic semiconductors for OLED devices

Supplementary files

Article information

Article type
Paper
Submitted
06 Nov. 2015
Accepted
21 Dec. 2015
First published
22 Dec. 2015

J. Mater. Chem. C, 2016,4, 1009-1018

Author version available

Phenothiazine and carbazole substituted pyrene based electroluminescent organic semiconductors for OLED devices

J. K. Salunke, F. L. Wong, K. Feron, S. Manzhos, M. F. Lo, D. Shinde, A. Patil, C. S. Lee, V. A. L. Roy, P. Sonar and P. P. Wadgaonkar, J. Mater. Chem. C, 2016, 4, 1009 DOI: 10.1039/C5TC03690A

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