A new mechanism, namely radiative transition switch (RTS), has been proposed for aggregation-induced emission, which is of importance for developing highly efficient AIE-active emitters.
Highly efficient electroluminescent Pt<sup>II</sup> ppy-type complexes with monodentate ligands
作者:Jiang Zhao、Feifan Dang、Zhao Feng、Boao Liu、Xiaolong Yang、Yong Wu、Guijiang Zhou、Zhaoxin Wu、Wai-Yeung Wong
DOI:10.1039/c7cc03251j
日期:——
Functional Pt(II) ppy-type complexes (ppy = 2-phenylpyridine anion) with pyridine and chloride monodentate ligands are prepared, which show high electroluminescent efficiencies.
A series of pyrimidine derivativesbearing one, two or three triphenylamine/9-ethylcarbazole substituents has been synthesized by Suzuki cross-coupling reaction. All compounds showed absorption bands in the UV region and the emission of violet-blue light upon irradiation. Protonation led to quenching of the fluorescence, although some derivatives remained luminescent with the appearance of a new red-shifted
Palladium-catalyzed ligand-free and aqueous Suzuki reaction for the construction of (hetero)aryl-substituted triphenylamine derivatives
作者:Chun Liu、Xiaofeng Rao、Xinlong Song、Jieshan Qiu、Zilin Jin
DOI:10.1039/c2ra22275b
日期:——
This paper reports an efficient synthesis of triphenylamine (TPA) derivatives via a palladium-catalyzed Suzuki reaction of (hetero)aryl halides with 4-(diphenylamino)phenylboronic acid (DPBA) in aqueous ethanol under aerobic and ligand-free conditions. Heteroaryl halides, namely pyridyl bromides, quinolyl bromides, pyrimidinyl bromides, 2-chloropyrazine and sulfur-containing heteroaryl bromides, could
本文报告了一个有效的综合 三苯胺(TPA)衍生物通过(杂)芳基卤化物与4-(二苯氨基)苯基硼酸(DPBA)水溶液乙醇在无氧和无配体的条件下。杂芳基卤化物,即吡啶基溴化物,喹啉基溴化物,嘧啶基溴化物,2-氯吡嗪含硫杂芳基溴化物可以与DPBA平稳反应,在温和条件下收率好至极好。此外,芳基溴化物也成功地用于与DPBA的交叉偶联中,并在室温下以高收率提供了产品。的交叉耦合4-溴苄腈与DPBA一起使用,在2分钟内以定量收率得到了所需的产物,导致TOF高达5820 h -1。