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Issue 25, 2016
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Novel organoboron compounds derived from thieno[3,2-b]thiophene and triphenylamine units for OLED devices

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Abstract

Two novel D–A (donor–acceptor) and one D–A–D small molecules containing mesitylborane as an acceptor and triphenylamine as a donor, linked through a thieno[3,2-b]thiophene π-conjugated spacer, are synthesized and characterized. Their photo- and electrochemical properties were investigated by experimental and computational studies. The emission quantum efficiencies were determined to be between 46% and 68% in THF. Their solid-state quantum yields were recorded up to 42%. The fabricated electroluminescent devices as emitting materials showed sky-blue to yellowish green emissions. Their devices exhibit high performance with a turn-on voltage, maximal brightness, and highest luminescence efficiency of up to 4.0 V, 1200 cd m−2 and 1.13 cd A−1, respectively. These results pave new avenues for the future molecules possessing D and A units connected via fused thiophenes.

Graphical abstract: Novel organoboron compounds derived from thieno[3,2-b]thiophene and triphenylamine units for OLED devices

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Supplementary files

Article information


Submitted
29 Mar 2016
Accepted
29 May 2016
First published
01 Jun 2016

J. Mater. Chem. C, 2016,4, 6045-6053
Article type
Paper

Novel organoboron compounds derived from thieno[3,2-b]thiophene and triphenylamine units for OLED devices

G. Turkoglu, M. E. Cinar, A. Buyruk, E. Tekin, S. P. Mucur, K. Kaya and T. Ozturk, J. Mater. Chem. C, 2016, 4, 6045
DOI: 10.1039/C6TC01285J

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