Synthesis, thermal and optical properties of a novel bis(2-(4-dicyanovinylphenyl) pyridinato-N, C2) iridium(acetylacetonate)

Altinolcek, Nuray; Tavasli, Mustafa; Aydemir, Murat; Abay, Bahattin; Monkman, Andrew P.

doi:10.1016/j.ica.2015.10.028

Makale Tam Makale Uluslararası 2016

Synthesis, thermal and optical properties of a novel bis(2-(4-dicyanovinylphenyl) pyridinato-N, C2) iridium(acetylacetonate)

Nuray Altinolcek, Mustafa Tavasli, Murat Aydemir, Bahattin Abay, Andrew P. Monkman

Inorganica Chimica Acta Cilt 440 · ss. 102–106 · 30.01.2016

DOI ile aç

Özet

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%). Complex 6 was fully chracterised by H-1, C-13 NMR, FT-IR, elemental analysis. Complex 6 showed a strong ligand centred (LC) absorption band at 355 nm (epsilon 56490 L mol (1) cm (1)) and weak metal-to-ligand charge transfer (MLCT) bands at 445 (epsilon 4154 L mol (1) cm (1)) and 535 nm (epsilon 2606 L mol (1) cm (1)). Complex 6 loses its acac moiety between 248 and 336 Alpha degrees C (under N-2 atmosphere) and emits a red light at 695 nm with a large Stokes shift (160 nm). (C) 2015 Elsevier B.V. All rights reserved.

Anahtar kelimeler

Thermal stability Heteroleptic iridium(III) complex Knoevenagel reaction Dicyanovinyl group Absorption Emission CYCLOMETALATED IRIDIUM COMPLEXES LIGHT-EMITTING-DIODES IR(III) COMPLEXES EMISSION COLOR BLUE LIGANDS PHOSPHORESCENCE PHOTOPHYSICS RED 2-PHENYLPYRIDINE

Atıf için künye

Altinolcek, N., Tavasli, M., Aydemir, M., Abay, B., & Monkman, A. P. (2016). Synthesis, thermal and optical properties of a novel bis(2-(4-dicyanovinylphenyl) pyridinato-N, C2) iridium(acetylacetonate). Inorganica Chimica Acta, 440, 102–106. https://doi.org/10.1016/j.ica.2015.10.028

BibTeX

@article{altinolcek2016-63869,
  author = {Altinolcek, Nuray and Tavasli, Mustafa and Aydemir, Murat and Abay, Bahattin and Monkman, Andrew P.},
  title = {Synthesis, thermal and optical properties of a novel bis(2-(4-dicyanovinylphenyl) pyridinato-N, C2) iridium(acetylacetonate)},
  journal = {Inorganica Chimica Acta},
  year = {2016},
  volume = {440},
  pages = {102--106},
  issn = {0020-1693},
  doi = {10.1016/j.ica.2015.10.028},
  url = {https://akademik.atauni.edu.tr/yayinlar/63869-synthesis-thermal-and-optical-properties-of-a-novel-bis2-4-dicyanovinylphenyl}
}