Synthesis and characterization of green-emitting phosphorescent Ir(III) complexes based on phenyl benzimidazole ligand
- Autores: Lin M.1, Tang Q.1, Zeng H.1, Xing G.1, Ling Q.1
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Afiliações:
- Fujian Key Laboratory of Polymer Materials
- Edição: Volume 86, Nº 7 (2016)
- Páginas: 1747-1752
- Seção: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/215833
- DOI: https://doi.org/10.1134/S1070363216070343
- ID: 215833
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Resumo
Several new Ir(III) complexes with 2-(4-bromophenyl)-1H-benzo[d]imidazole or 2-(4-bromophenyl)- 1-methyl-benzo[d]imidazole ligands as cylcometalated ligand and acetylacetonate or picolinate as the ancillary ligand were synthesized and their structures and photophysical properties were characterized. HOMO and LUMO energy levels and the molecular structures of Ir(III) complexes were scrutinized by DFT calculations. The complexes exhibited green luminescence at the maximum emission peaks at ca 495–522 nm. The methyl group substituent and replacing of acetylacetonate with picolinate complex can enhance the complex thermal stability. HOMO energy levels of the complexes vary from –4.99 to –5.44 eV, the LUMO energy levels are between –1.52 and –1.97 eV.
Sobre autores
Meijuan Lin
Fujian Key Laboratory of Polymer Materials
Autor responsável pela correspondência
Email: mjlin@fjnu.edu.cn
República Popular da China, Fuzhou, 350007
Qiang Tang
Fujian Key Laboratory of Polymer Materials
Email: qdling@fjnu.edu.cn
República Popular da China, Fuzhou, 350007
Huijuan Zeng
Fujian Key Laboratory of Polymer Materials
Email: qdling@fjnu.edu.cn
República Popular da China, Fuzhou, 350007
Guang Xing
Fujian Key Laboratory of Polymer Materials
Email: qdling@fjnu.edu.cn
República Popular da China, Fuzhou, 350007
Qidan Ling
Fujian Key Laboratory of Polymer Materials
Autor responsável pela correspondência
Email: qdling@fjnu.edu.cn
República Popular da China, Fuzhou, 350007