18107-02-3Relevant academic research and scientific papers
Metal organic complex and application of metal organic complex in organic electronic device
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Paragraph 0027; 0028; 0031; 0032, (2018/03/28)
The invention provides a metal organic complex, which is the double-core metal complex taking 2-pyrimidine-benzimidazole as a bridging ligand, wherein two central metals are independent transitional metal elements. The invention also provides an application of the metal organic complex in an organic electronic device, and the organic electronic device can be an organic light-emitting diode, an organic photovoltaic battery, an organic field effect transistor, an organic luminous field effect transistor, an organic laser, an organic spinning-electron device, an organic sensor or an organic plasmon emission diode. The double-core metal complex has two luminescence centers, and can effectively increase the luminescence efficiency of the complex and the performance of the corresponding devices.
Synthesis and formation of dinuclear mixed-valent complexes of ruthenium and osmium bridged by 2-(2-pyrimidyl)benzimidazolate
Haga, Masa-Aki,Ishizuya, Masahide,Kanesugi, Tomokazu,Yutaka, Tomona,Sakiyama, Daisuke,Fees, Joerg,Kaim, Wolfgang
, p. 2290 - 2299 (2007/10/03)
Mononuclear Ru/Os complexes, [M(bpy)2(Hbimpm)]2+, where Hbimpm = 2-(2-pyrimidyl)benzimidazole, behaves as a monobasic acid to form the conjugate base, [M(bpy)2(bimpm)]2+ where bimpm = 2-(2-pyrimidyl)benzimidazolate. Novel dinuclear Ru/Os complexes bridged by 2-(2-pyrimidyl)benzimidazolate (bimpm) have been prepared from the reaction of M(bpy)2Cl2 with a deprotonated mononulcear complex, [M(bpy)2(bimpm)]+(M = Ru and Os). The MLCT band for the dinuclear Ru complexes, [Ru(bpy)2(L)Ru(bpy)2] n+, is shifted to longer wavelengths in the order of L = bibenzimidazolate (bibzim) > bibzim > bpm. Furthermore, the K com value of a mixed-valent complex, calculated from the potential difference between the first and second electron-transfer step, for the Ru complex is larger than that for the Os analogue. The mixed-valent complexes which were generated electrochemically show the intervalence charge transfer band at 1830 nm for Ru and 1300 nm for Os, respectively. The degree of electronic coupling between two metal centers is calculated as 650 cm -1 for Ru and 360 cm-1 for Os, respectively. By comparing the Kcom and Hab values with those of the analogous bridged ligand system such as bpm and bibzim, a synergetic contribution of both electron exchange and hole exchange mechanisms is operative for metal-metal communications in the present bimpm -bridged mixed-valent complexes.
