Inter-Ligand Energy Transfer and Related Emission Change in the
Cyclometalated Heteroleptic Iridium Complex: Facile and Efficient Color
Tuning over the Whole Visible Range by the Ancillary Ligand Structure
Youngmin You
Soo Young Park
10.1021/ja052880t.s001
https://acs.figshare.com/articles/journal_contribution/Inter_Ligand_Energy_Transfer_and_Related_Emission_Change_in_the_Cyclometalated_Heteroleptic_Iridium_Complex_Facile_and_Efficient_Color_Tuning_over_the_Whole_Visible_Range_by_the_Ancillary_Ligand_Structure/3268258
We report a novel color tuning methodology in the electrophosphorescent iridium complex by substituting one cyclometalating ligand to an ancillary ligand as an emitting center. Highly efficient exothermic inter-ligand energy transfer (ILET) from the MLCT<sup>3</sup> state produced between iridium and cyclometalating 2-(2,4-difluorophenyl)pyridine to LX<sup>3</sup> state of the ancillary ligand offers a chance to access a wider range of color from sky blue (478 nm) to red (666 nm). Characteristic shapes of photoluminescence spectra, strong solvatochromic phenomena as well as DFT calculations gave evidences for this exothermic ILET.
2005-09-14 00:00:00
novel color
solvatochromic phenomena
MLCT 3 state
photoluminescence spectra
LX 3 state
Efficient Color Tuning
electrophosphorescent iridium
DFT calculations
Related Emission Change
Characteristic shapes
ILET
nm
Ancillary Ligand Structure
cyclometalating ligand
Whole Visible Range