Tetraaryl pyrenes: photophysical properties, computational studies, crystal structures, and application in OLEDs?
Journal of Materials Chemistry C Pub Date: 2015-10-15 DOI: 10.1039/C5TC02849C
Abstract
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?542 cd m?2 at 8.2 V for compound 2, respectively.
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Journal Name：Journal of Materials Chemistry C
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CAS no.: 89640-58-4
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