通过Ulmann缩合反应合成了在有机电致发光（OEL）显示器件上有使用前景的四苯基联苯二胺类空穴传输材料N， N′-二苯基-N， N′-双(3-甲基苯基)-［1， 1′-联苯］-4， 4′-二胺、 N， N′-二苯基-N， N′-双(4-甲基苯基)-［1， 1′-联苯］-4， 4′-二胺和N， N， N′， N′-四苯基-［1， 1′-联苯］-4， 4′-二胺。 对产品从混合物中分离的方法作了改进。 其产率及含量分别为85%、 97.6%； 95%、 98.5%； 70 %、 98.1% 。 对3种化合物均用红外光谱进行了表征。
The tetraphenylbiphenyldiamines used as the hole transport materials have great application potentiality in organic electroluminescent(OEL) devices. Three of these compounds were prepared by Ulmann reaction .They were N, N′-diphenyl-N, N′-bis(3-methylphenyl)-［1, 1′-biphenyl］-4, 4′-diamine(1) , N, N′-diphenyl-N, N′-bis(4-methylphenyl)-［1, 1′-biphenyl］-4, 4′-diamine(2) and N, N, N′, N′-tetraphenyl-［1, 1′-biphenyl］-4, 4′-diamine(3). The method of seperating products from the reaction mixtures was improved, and the yields and purities are (1)Y 85%,P97.6% ;(2)Y95%, P 98.5% and (3)Y 70%, 98.1%, respectively. Their IR spectra were all measured also
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