| Autor: |
Kazantsev, Maxim S., Beloborodova, Alina A., Frantseva, Ekaterina S., Rybalova, Tatyana V., Shundrina, Inna K., Mostovich, Evgeny A., Konstantinov, Vladislav G., Paraschuk, Dmitry Yu. |
| Předmět: |
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| Zdroj: |
CrystEngComm; 4/7/2017, Vol. 19 Issue 13, p1809-1815, 7p |
| Abstrakt: |
Single crystals of furan/phenylene co-oligomers are among the most promising highly-emissive materials for applications in various optoelectronic devices. In this work, we synthesized and studied furan/phenylene co-oligomers with the same conjugated core 1,4-bis(5-phenylfuran-2-yl)benzene and methyl substituents at p- and m-positions of the terminal phenyls. The effect of substituents on the crystal packing, charge transport and luminescence of the single crystals was studied. Compared to the unsubstituted compound, the methyl-substituted co-oligomers demonstrated improved thermostability and enhanced photoluminescence, which we assign to J-aggregation resulting from the strong inclination of the molecules against the main crystal facet. The charge mobility in single crystal organic field-effect transistors decreased upon the inclination of the molecules. We conclude that the molecular tilt angle, intermolecular distances and interactions in crystals of heteroaryl-containing linear conjugated oligomers can be controlled by the introduction of end methyl groups in the appropriate positions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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