Synthesis, thermal and optical properties of a novel bis(2-(4-dicyanovinylphenyl)pyridinato-N,C2)iridium(acetylacetonate)
Synthesis, thermal and optical properties of a novel bis(2-(4-dicyanovinylphenyl)pyridinato-N,C2)iridium(acetylacetonate)
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DOI：
10.1016/j.ica.2015.10.028
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发表时间：
2016-01
影响因子：
2.8
通讯作者：
Nuray Altınölçek;Mustafa Tavaslı;M. Aydemir;Bahattin Abay;A. Monkman
中科院分区：
文献类型：
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作者：
Nuray Altınölçek;Mustafa Tavaslı;M. Aydemir;Bahattin Abay;A. Monkman
Bis(2-(4-formylphenyl)pyridinato-N,C2)iridium(acetylacetonate) (5) was subjected to a Knoevenagel reaction with malononitrile in dichloromethane in the presence of catalytic amount of pyrrolidine. This gave successfully a novel bis(2-(4-dicyanovinylphenyl)pyridinato-N,C2)iridium(acetylacetonate) (6) in good yield (83%). Complex6was fully chracterised by1H,13C NMR, FT-IR, elemental analysis. Complex6showed a strong ligand centred (LC) absorption band at 355 nm (ε56 490 L mol−1cm−1) and weak metal-to-ligand charge transfer (MLCT) bands at 445 (ε4154 L mol−1cm−1) and 535 nm (ε2606 L mol−1cm−1). Complex6loses its acac moiety between 248 and 336 °C (under N2atmosphere) and emits a red light at 695 nm with a large Stokes shift (160 nm).
