[Pt(topy)(Htopy)(ONO2)] complex (Htopy = 2‐p‐tolylpyridine) and its analogs: 195Pt NMR spectra and fabrication of light‐emitting devices |
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| Authors: | Hiroto Fukuda Yui Yamada Daisuke Hashizume Toshio Takayama Masatoshi Watabe |
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| Affiliation: | 1. General Education Department, Kogakuin University, Hachioji, Tokyo 192‐0015, Japan;2. Molecular Characterization Team, RIKEN, Hirosawa, Wako, Saitama 351‐0198, Japan;3. Department of Material and Life Chemistry, Kanagawa University, Kanagawa‐ku, Yokohama 221‐8686, Japan |
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| Abstract: | We report fast, high‐yield syntheses of a series of [Pt(C∧N)(HC∧N)X] complexes, where HC∧N is 2‐phenylpyridine (Hppy) or 2‐p‐tolylpyridine (Htopy) and X? is Cl?, Br?, I?, ONO2?, NO2? or SCN?. The structure of [Pt(topy)(Htopy)(ONO2)] was analyzed by single‐crystal X‐ray diffraction. Substitution of Cl? with Br? or I? in our complexes shifted the 195Pt NMR peaks upfield in the order Cl? < Br? < I?, but the magnitudes of their shifts were one‐tenth those observed for non‐cyclometalated platinum(II) complexes. As the two nitrato complexes showed strong emissions in acetonitrile solution—three to six times those of other complexes—they were used to fabricate OLEDs. Although their emissions were not particularly strong, devices fabricated with platinum(II) complexes containing bulky ligands emitted green light with a short lifetime (τ). Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | platinum(II) phenylpyridine 195Pt NMR emission OLEDs |
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