Cyclometalated NCN platinum(II) acetylide complexes – Synthesis, photophysics and OLEDs fabrication

The novel cyclometalated NCN platinum(II) acetylide complexes were synthesized. As precursors of acetylide ligands were used 9,9-dibutyl-2-ethynylfluorene, 9-butyl-3-ethynylcarbazole, and 5-ethynyl-2,2′-bithiophene, whereas 1,3-di(2-pirydyl)benzene derivatives were cyclometalating NCN ligands. Varia...

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Bibliographic Details
Published in:Optical materials 2016-12, Vol.62, p.543-552
Main Authors: Szafraniec-Gorol, Grazyna, Slodek, Aneta, Schab-Balcerzak, Ewa, Grucela, Marzena, Siwy, Mariola, Filapek, Michal, Matussek, Marek, Zych, Dawid, Mackowski, Sebastian, Buczynska, Dorota, Grzelak, Justyna, Erfurt, Karol, Chrobok, Anna, Krompiec, Stanislaw
Format: Article
Language:English
Subjects:
Electrochemical properties
Optical properties
Organometallic compounds
Photoluminescence spectroscopy
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Summary:The novel cyclometalated NCN platinum(II) acetylide complexes were synthesized. As precursors of acetylide ligands were used 9,9-dibutyl-2-ethynylfluorene, 9-butyl-3-ethynylcarbazole, and 5-ethynyl-2,2′-bithiophene, whereas 1,3-di(2-pirydyl)benzene derivatives were cyclometalating NCN ligands. Variable character of ligands allowed to prepare a series of novel platinum(II) complexes, which showed light emission in a wide wavelength range from 410 to 625 nm. The optical and electrochemical properties of new complexes were examined and compared with theoretical DFT calculations. Complexes containing fluorenyl and carbazyl motif were used as emitters in an organic light-emitting diodes. The applicability of these Pt(II) complexes for electroluminescence was examined. [Display omitted] •Platinum acetylide complexes with fluorene, carbazole and bithienyl motifs were examined.•Thorough characterization of optical and electrochemical properties of new complexes has been carried out.•Experimental findings were confirmed by DFT calculations.•OLED's devices were prepared, where Pt(II) complexes had been used as emitters.•The devices emitted yellow-greenish to orange-red light.
ISSN:0925-3467
1873-1252
DOI:10.1016/j.optmat.2016.11.021