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Synthesis and Characterization of Oxetane‐Functionalized Phosphorescent Ir(III)‐Complexes
Author(s) -
Ulbricht Christoph,
Rehmann Nina,
Holder Elisabeth,
Hertel Dirk,
Meerholz Klaus,
Schubert Ulrich S.
Publication year - 2009
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800574
Subject(s) - oxetane , phosphorescence , iridium , ligand (biochemistry) , chemistry , polymer chemistry , derivative (finance) , covalent bond , photochemistry , materials science , fluorescence , organic chemistry , catalysis , biochemistry , physics , receptor , quantum mechanics , financial economics , economics
In order to incorporate iridium(III) complexes covalently into an oxetane‐bearing hole‐transporting matrix, a new oxetane‐equipped acetoacetate derivative was introduced as an ancillary ligand. Model complexes with an analogical nonpolymerizable ligand were also prepared in order to perform comparative investigations. Therefore, a series of bis ‐cyclometalated Ir(III) complexes, showing orange (C⁁N‐ligand, coumarin 6) and green (C⁁N‐ligand, phenylpyridine) emission were synthesized and fully characterized. The emission maxima are 569 nm for the orange and 518 nm for the green‐emitting Ir(III) complexes. Entirely solution processed devices, based on crosslinkable hole‐conductors, partially doped with the described orange and green Ir(III) emitters, respectively, were fabricated and tested.