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New amide based iridium( scpiii/scp ) complexes: synthesis, characterization, photoluminescence and DFT/TD-DFT studies/title       
Yazarlar
Çiğdem Şahin
Pamukkale Üniversitesi, Türkiye
Aysen Gören
Serkan Demir
Giresun Üniversitesi, Türkiye
Doç. Dr. Muhammet Serdar ÇAVUŞ
Kastamonu Üniversitesi, Türkiye
Özet
New iridium(iii) complexes with 2-(3-fluorophenyl)-4-methylpyridine as cyclometalated ligands and 2,2′-bipyridine-4,4′-dicarboxamide derivatives as ancillary ligands were synthesized and characterized by FTIR, NMR, MS, UV/Visible, and fluorescence spectroscopies and cyclic voltammetry. The effects of different solvents and substituents on the photophysical properties of the complexes have been investigated. The complexes show tunable photoluminescence wavelengths depending on solvent polarity in the 548 nm to 610 nm range where the emission colour can change from green to orange-red. The complexes exhibit high photoluminescence quantum yields between 0.41 and 0.75, which may be attributed to the change in the transition dipole moment originating from the amide group upon electronic excitation. The calculated HOMO and LUMO energy levels of complexes 1-7 are in the -5.51 to -5.60 eV and -3.37 to -3.40 eV ranges, respectively. The ground and excited state properties of 1 have been fully investigated by means DFT and TD-DFT methods respectively. The general trends of observed data have been successfully represented and quantified by computational data.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı NEW JOURNAL OF CHEMISTRY
Dergi ISSN 1144-0546
Dergi Tarandığı Indeksler SCI
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 02-2018
Cilt No 42
Sayı 4
Sayfalar 2979 / 2988
Doi Numarası 10.1039/c7nj04671e
Makale Linki http://xlink.rsc.org/?DOI=C7NJ04671E