1-(4-(3,6-di-(3,6-di-t-butylcarbazol-9-yl))carbazol-9-yl)phenyl-2-(2-bromophenyl)benzoimidazole | 1198118-49-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: 1-(4-(3,6-di-(3,6-di-t-butylcarbazol-9-yl))carbazol-9-yl)phenyl-2-(2-bromophenyl)benzoimidazole
• CAS: 1198118-49-8
• 化学式: C₇₁H₆₆BrN₅
• 分子量: 1069.24
• InChiKey: JHGDFHPXGVCXPC-UHFFFAOYSA-N

反应信息

• 作为反应物：
  描述：

  (Et₂S)₂PtCl₂ 、 1-(4-(3,6-di-(3,6-di-t-butylcarbazol-9-yl))carbazol-9-yl)phenyl-2-(2-bromophenyl)benzoimidazole 在 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 1.25h， 以32%的产率得到Pt(t-BuCzCzPBI)₂
  参考文献：
  名称：

  Design, Synthesis, and Optoelectronic Properties of Dendrimeric Pt(II) Complexes and Their Ability to Inhibit Intermolecular Interaction

  摘要：

  Dendrimeric Pt(II) complexes [((CN)-N-boolean AND)Pt(dpm)] and [Pt((CN)-N-boolean AND)(2)] (Hdpm = dipivaloylmethane, (HCN)-N-boolean AND = 1,2-diphenylbenzoimidazole and its derivatives containing the carbazole. dendrons) have been synthesized and characterized systematically. All of the complexes display green emission in the range of 495-535 nm that originated from the 360-440 nm absorption bands, which are assigned to d pi(Pt)->pi*(L) metal-to-ligand charge transfer (MLCT) mixed with intraligand pi(L)->pi*(L) transition. Solution photoluminescence quantum yield (phi(p) 0.26-0.31) of the heteroleptic complexes [((CN)-N-boolean AND)Pt(dpm)] obviously increases when compared with that of complex [((CN)-N-boolean AND)Pt(acac)]. Organic light-emitting diode devices based on these Pt(II) complexes with a multilayer configuration were fabricated and gave desirable electroluminescent (EL) performances, such as non- or less red-shifted EL spectra, in comparison with the photoluminescence spectra and slow efficiency roll-off with increasing brightness or current density. Complex [(t-BuCzCzPBI)Pt(dpm)] (where t-BuCzCzPBI = 1-(4-(3,6-di-(3,6-di-t-butylcarbazol-9-yl))carbazol-9-yl)phenyl-2-phenylbenzoimidazole) showed the best performance, with a maximum current efficiency of 29.31 cd/A and a maximum external quantum efficiency (EQE) of 9.04% among the fabricated devices. Likewise, for homoleptic [Pt(t-BuCzCzPBI)(2)] dendrimer, the powder phi(p) (0.14) and maximum EQE (0.74%) improve by 7 and 7.4 times, respectively, as high as they do for nondendrimeric [Pt(1,2-diphenylbenzoimidazole)(2)] (0.02, 0.10%), although its efficiency is still lower than that of the heteroleptic counterpart due to the severely distorted square-planar geometry of the emitting core. These results reveal that large steric hindrance from ancillary ligand (dpm) or the homoleptic conformation can effectively inhibit intermolecular interaction for these denchimeric Pt(II) complexes.

  DOI：

  10.1021/ic402099x