| Title |
The effect of molecular structure on the properties of fluorene derivatives for OLED applications / |
| Authors |
Pidluzhna, Anna ; Vembris, Aivars ; Grzibovskis, Raitis ; Zommere, Margarita Anna ; Bezvikonnyi, Oleksandr ; Simokaitiene, Jurate ; Baronaite, Melita ; Volyniuk, Dmytro ; Grazulevicius, Juozas V ; Ali, Amjad ; Baryshnikov, Glib ; Ivaniuk, Khrystyna ; Starykov, Hryhorii ; Stakhira, Pavlo |
| DOI |
10.3390/molecules29204918 |
| Full Text |
|
| Is Part of |
Molecules.. Basel : MDPI. 2024, vol. 29, iss. 20, art. no. 4918, p. 1-13.. ISSN 1420-3049 |
| Keywords [eng] |
OLEDs ; blue-emission ; electroplex ; exciplex ; fluorene derivatives |
| Abstract [eng] |
A new family of symmetrical fluorene derivatives with different types of substituents attached to the C-2 and C-7 positions of the fluorene core synthesized by the Sonogashira coupling reactions is reported. The electronic structures and the properties of the compounds investigated by means of photoelectron emission spectroscopy, UV-Vis absorption and photoluminescent spectroscopy as well as by DFT and TD-DFT theoretical calculations are discussed. It is shown that the nature of substituents influences the π-conjugation of the molecules. No intermolecular charge transfer within the investigated wavelength range is observed. The applicability of the synthesized compounds in organic light-emitting diodes (OLEDs) based on exciplex emission is demonstrated. The advanced co-deposition technique with the tuned OLED architecture was applied and resulted in improved OLED parameters. |
| Published |
Basel : MDPI |
| Type |
Journal article |
| Language |
English |
| Publication date |
2024 |
| CC license |
|
