Dalton Transactions, Issue 26 (2011)
© 2011 EPFL
Room-temperature combinatorial screening of cyclometallated iridium(III) complexes for a step towards molecular control of colour purity.
The group of Prof. Michaël Grätzel (LPI - Laboratory of Photonics and Interfaces) obtained a library of emission spectra of 90 bis-cyclometallated iridium complexes using a simple combinatorial approach performed at room temperature. Trends in emission maxima are rationalized using Hammett parameters and invoking inter ligand energy transfer (ILET) processes. The screening approach allowed them to observe trends in the broadness of emission spectra opening the way for a rational approach to the engineering of the emission colour purity at a molecular level.
Etienne Baranoff et al., Dalton Trans., 2011, 40, 6860-6867 DOI:10.1039/C0DT01697G