当前位置: X-MOL 学术Dyes Pigments › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Phenanthro[9,10-d]imidazole with thiophene rings toward OLEDs application
Dyes and Pigments ( IF 4.1 ) Pub Date : 2018-07-07 , DOI: 10.1016/j.dyepig.2018.07.014
S. Kula , A. Szlapa-Kula , S. Kotowicz , M. Filapek , K. Bujak , M. Siwy , H. Janeczek , S. Maćkowski , E. Schab-Balcerzak

A series of phenanthro [9,10-d]imidazole derivatives with thiophene units were synthesized using the Debus-Radziszewski reaction. A study of the optical, electrochemical and thermal properties of the new compounds was conducted. All derivatives were found to be thermally stable, with high melting temperatures (250–267 °C) and with the beginning of decomposition starting above 350 °C. They underwent the multistage electrochemical reduction. All phenanthro [9,10-d]imidazole derivatives were luminescent in solution and in solid state. In solution they emitted radiation with maximum emission band located at 414–461 nm with photoluminescence quantum yields in the range of 56%–64% in chloroform. As films they emitted blue light with ΦPL ranging from 12 to 23%. The possibility of applying one of the synthesized compound in optoelectronics devices was studied as well. The devices showed intense electroluminescence which can be further enhanced by increasing the content of 2-(2,2′-bithiophen-5-yl)-1-phenyl-1H-phenanthro [9,10-d]-imidazole in the active layer.



中文翻译:

带有噻吩环的苯并[9,10- d ]咪唑在OLED领域的应用

使用Debus-Radziszewski反应合成了一系列具有噻吩单元的菲[9,10-d]咪唑衍生物。对新化合物的光学,电化学和热学性质进行了研究。发现所有衍生物都是热稳定的,具有较高的熔化温度(250–267°C),并且分解开始于350°C以上。他们经历了多阶段的电化学还原。所有菲并[9,10-d]咪唑衍生物在溶液和固态下均发光。在溶液中,他们发出的辐射的最大发射带位于414-461 nm,在氯仿中的光致发光量子产率为56%-64%。As薄膜它们发出的蓝色光与Φ PL从12%到23%不等。还研究了将一种合成的化合物应用于光电器件的可能性。器件显示出强烈的电致发光,可以通过增加活性物质中2-(2,2'-联噻吩-5-基)-1-苯基-1 H-菲[9,10-d]-咪唑的含量来进一步增强层。

更新日期:2018-07-07
down
wechat
bug