Unraveling the luminescence of new heteroleptic Ir(III) cyclometalated series

Synthesis of novel molecular-engineered Ir(III) complexes and their photophysics in different rigid media are discussed to emphasize rigidochromism. [Display omitted] Three molecular engineered [Ir(N^C)2(CF3pic)] complexes, where N^C are Fppy = 2-(2,4-difluorophenyl)pyridine, ppy = 2-phenylpyridine...

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Bibliographic Details
Published in:Polyhedron 2019-05, Vol.163, p.161-170
Main Authors: Coppo, Rodolfo L., Zanoni, Kassio P.S., Murakami Iha, Neyde Y.
Format: Article
Language:English
Subjects:
Cyclometalated
Iridium
Phosphorescence
Photophysics
Rigidochromism
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Summary:Synthesis of novel molecular-engineered Ir(III) complexes and their photophysics in different rigid media are discussed to emphasize rigidochromism. [Display omitted] Three molecular engineered [Ir(N^C)2(CF3pic)] complexes, where N^C are Fppy = 2-(2,4-difluorophenyl)pyridine, ppy = 2-phenylpyridine or Meppy = 2-(p-tolyl)pyridine, and CF3pic = 3-(trifluoromethyl)pyridine-2-carboxylate, are reported to elucidate their photophysical characteristics and emission profiles to emphasize rigidochromism. Their emission in fluid media is ascribed to a lowest-lying 3MLCT (metal-to-ligand charge transfer) excited state with emission quantum yields (ϕ) at room temperature of 0.13 for [Ir(Fppy)2(CF3pic)] and ϕ 
ISSN:0277-5387
DOI:10.1016/j.poly.2019.01.058