Tetraaryl pyrenes: photophysical properties, computational studies, crystal structures, and application in OLEDs
Pyrene was derivatized in positions 1, 3, 6, and 8 to yield a series of nine tetraarylpyrenes for which absorption, emission, emission lifetimes and solvatochromism in solution were determined. The fluorescence quantum yields in thin films and crystalline state, electrochemistry, and quantum-chemica...
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| Other Authors: | , , , , , , , , , , , |
| Format: | article |
| Published: |
2016
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| Online Access: | http://hdl.handle.net/10725/4888 http://dx.doi.org/10.1039/C5TC02849C http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://pubs.rsc.org/is/content/articlehtml/2016/tc/c5tc02849c |
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| Summary: | Pyrene was derivatized in positions 1, 3, 6, and 8 to yield a series of nine tetraarylpyrenes for which absorption, emission, emission lifetimes and solvatochromism in solution were determined. The fluorescence quantum yields in thin films and crystalline state, electrochemistry, and quantum-chemical calculations were completed for the series along with the X-ray crystal structure analysis of compounds 1, 2, 4, 5, 7, and 9. Compounds 2, 3, 4 as well as 7 were identified as the most suitable candidates for OLED application. Notably, in an unoptimized single-layer device geometry, these compounds exhibited blue electroluminescence coupled with impressively low turn-on voltages and high maximum luminances such as 2.8 V and 13[thin space (1/6-em)]542 cd m−2 at 8.2 V for compound 2, respectively. |
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