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Updated: Jun 4, 2026
Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Room-temperature combinatorial screening of cyclometallated iridium(III) complexes for a step towards molecular
Etienne Baranoff1, Il Jung, Rosario Scopelliti
1Laboratory of Photonics and Interfaces, Swiss Federal Institute of Technology, Station 6, CH-1015, Lausanne, Switzerland. etienne.baranoff@epfl.ch
Abstract:
A library of emission spectra of 90 bis-cyclometallated iridium complexes has been obtained 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 us 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. Finally limitations to the screening strategy are discussed using a case study that involves two different monodentate ligands.
