کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5435342 | 1509346 | 2017 | 6 صفحه PDF | دانلود رایگان |
- A new luminophore: di(alkylthiophene) derivative of flavanthrone (FTC8) was synthesized.
- The FTC8 showed very high photoluminescence QY (60%) value.
- Molecules of FTC8 have a strong tendency to self-organize in monolayers deposited on the surface of HOPG, as observed by STM.
A new, solution processable and highly luminescent compound (photoluminescence QY ca. 60%), namely di(alkylthienyl) substituted benzo[h]benz[5,6]acridino[2,1,9,8-klmna]acridine, abbreviated as (FTC-8) was synthesized. FTC-8 is electrochemically active showing a quasi-reversible redox couple at negative potentials (vs Fc/Fc+) and an irreversible oxidation peak at positive ones. Its ionization potential and electron affinity values, determined from the cyclic voltammetry results are: IPÂ =Â 5.48Â eV and ÇEAÇÂ =Â 3.36Â eV. The effect of the conjugation extension from the azaacene core to alkylthienyl substituent on the electrochemical and spectroscopic properties of FTC-8 is rather weak, which is consistent with DFT calculation showing that the core and the thienyl substituent are almost orthogonal. Taking into account the measured redox properties and efficient luminescence, FTC-8 can be considered as a promising candidate for the fabrication of light emitting diodes. FTC-8 shows also strong tendency to self-assemble forming highly ordered monolayers on HOPG graphite as demonstrated by STM investigations.
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Journal: Synthetic Metals - Volume 232, October 2017, Pages 117-122