Structure–property relationships based on Hammett constants in cyclometalated iridium (III) complexes: their application to the design of a fluorine-free FIrPic-like …

…, I Tavernelli, U Rothlisberger, MK Nazeeruddin…

Index: Frey, Julien; Curchod, Basile F. E.; Scopelliti, Rosario; Tavernelli, Ivano; Rothlisberger, Ursula; Nazeeruddin, Mohammad K.; Baranoff, Etienne Dalton Transactions, 2014 , vol. 43, # 15 p. 5667 - 5679

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Citation Number: 43

Abstract

While phosphorescent cyclometalated iridium (III) complexes have been widely studied, only correlations between oxidation potential EOX and Hammett constant σ, and between the redox gap (ΔEREDOX= EOX− ERED) and emission or absorption wavelength (λabs, λem) have been reported. We present now a quantitative model based on Hammett parameters that rationalizes the effect of the substituents on the properties of cyclometalated iridium (III ...