Graf, Marion and Czerwieniec, Rafal and Mayer, Peter and Boettcher, Hans-Christian (2021) Synthesis and structural characterization of bis-cyclometalated compounds [Ir(dFppy)(2)(Me(4)phen)]PF6 and [Ir(dF(CF3)ppy)(2)(Me(4)phen)]PF6. INORGANICA CHIMICA ACTA, 527: 120554. ISSN 0020-1693, 1873-3255
Full text not available from this repository. (Request a copy)Abstract
The synthesis and structural characterization of bis-cyclometalated compounds [Ir(dFppy)(2)(Me(4)phen)]PF6 (4) and [Ir(dF(CF3)ppy)(2)(Me(4)phen)]PF6 (5) (dFppy = 2-(2',4'-difluorophenyl)pyridinato, dF(CF3)ppy = 2-(2',4'-difluorophenyl)-5-(trifluoromethyl)pyridinato, Me(4)phen = 3,4,7,8-tetramethyl-1,10-phenanthroline) were described, and their molecular structures were confirmed by single-crystal X-ray diffraction. Both compounds 4 and 5 show intense bluish-green luminescence in a diluted solution of organic solvents. The ligand change from dFppy in 4 to dF(CF3)ppy in 5 causes a significant change in the emission-decay kinetics, increasing the observed radiative rate by 4.5 times, despite the emission wavelength experiences, only a very moderate shift. The photophysical effects are rationalized by the interplay of different emitting excited states associated with different ligand-character contributions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | IRIDIUM(III) COMPLEXES; PHENYLPYRIDINE; TOOL; Crystal structure; Cyclometalated complexes; Iridiu m; Luminescence properties; TD-DFT calculations |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Physical Chemistry I |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Aug 2022 10:31 |
| Last Modified: | 18 Aug 2022 10:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/46752 |
Actions (login required)
 |
View Item |
