MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENTS AND ORGANIC ELECTROLUMINESCENT ELEMENT
申请人:Takata Yoshiyuki
公开号:US20090156827A1
公开(公告)日:2009-06-18
An object of the present invention is to provide a material for high-brightness, high-efficiency, longer-life organic EL elements and an organic EL element produced by using the same.
Provided is a material for organic EL elements, comprising a compound represented by the following General Formula (1):
wherein, R
1
and R
2
each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group.
A series of ladder type Ï-conjugated diboron complexes 1â4 have been designed and synthesized by a very simple synthetic procedure. Single crystals of complex 3 were grown and the molecular structure determined by X-ray diffraction analysis demonstrated that this type of diboron ladder has a rather planar skeleton. All complexes possess very high melting points (275â383 °C) and decomposition temperatures (Td5: 343â400 °C), indicative of their high thermal stabilities. The electrochemical and photophysical properties as well as theoretical calculations were investigated, suggesting the possibility of these boron complexes as efficient emitters in optoelectronics.
通过非常简单的合成程序,我们设计并合成了一系列梯形Ï-共轭二硼络合物 1â4 。通过 X 射线衍射分析确定的分子结构表明,这种二硼梯形络合物具有相当平面的骨架。所有复合物都具有很高的熔点(275Â383 °C)和分解温度(Td5:343Â400 °C),表明它们具有很高的热稳定性。研究人员对这些硼络合物的电化学和光物理性质以及理论计算进行了研究,结果表明,这些硼络合物有可能成为光电子学中的高效发光体。
Microwave-activated synthesis of thiazolo[5,4-d]thiazoles by a condensation/oxidation sequence
A microwave-assisted preparation of symmetrical thiazolo[5,4-d]thiazoles from the corresponding aldehydes is presented. The two-step reaction sequence comprises the condensation of aldehydes with dithiooxamide followed by oxidation/aromatization with 1,4-benzoquinone derivatives. The new procedure provides the desired products in good yields and in most cases allows reduction of the excess of aldehyde
介绍了一种微波辅助从相应的醛类制备对称的噻唑并[5,4- d ]噻唑的方法。两步反应序列包括醛与二硫代草酰胺的缩合,然后用1,4-苯醌衍生物的氧化/芳构化。与以前的方法相比,新方法以高收率提供了所需的产品,并且在大多数情况下,可以减少工艺中使用的过量醛。首次展示了该反应在芳族和脂族醛上的应用。