基于具有庞大叔丁基和三甲基硅基取代基的聚甲亚胺/色烯的用于有机发光二极管的红色荧光材料。

Red fluorescent materials based on julolidine/chromene with the bulky tert-butyl and trimethylsilyl substituents for organic light-emitting diodes.

作者信息

Na Eun Jae, Kim Hye Jeong, Lee Kum Hee, Lee Seok Jae, Kim Young Kwan, Yoon Seung Soo

出版信息

J Nanosci Nanotechnol. 2014 Aug;14(8):5979-82. doi: 10.1166/jnn.2014.8318.

DOI:10.1166/jnn.2014.8318

Abstract

In this work, we designed and synthesized two red emitters 2-(6,8-di-tert-butyl-2-(2-(1,1-dimethyl-7-(trimethylsilyl)-7-((trimethylsilyl)methyl)-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-yl)vinyl)-4H-chromen-4-ylidene)malononitrile (Red 1) and 2-(6,8-di-tert-butyl-2-(2-(1,1,7-trimethyl-7-t-butyl)-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-yl)vinyl)-4H-chromen-4-ylidene)malononitrile (Red 2). To explore the electro-luminescence properties of these materials, multilayered OLEDs using these materials as dopants in a Alq3 host were fabricated. Particularly, by using Red 1 as a dopant in emitting layer, device 1 showed the luminous and power efficiencies of 0.81 cd/A and 0.43 lm/W at 20 mA/cm2, respectively. The CIE coordinates of this device was (0.65, 0.34) at 7.0 V, which is close to the NTSC standard CIE coordinates of (0.67,0.32) for red emission.

摘要

在本工作中，我们设计并合成了两种红色发光体2-(6,8-二叔丁基-2-(2-(1,1-二甲基-7-(三甲基硅基)-7-((三甲基硅基)甲基)-1,2,3,5,6,7-六氢吡啶并[3,2,1-ij]喹啉-9-基)乙烯基)-4H-色烯-4-亚基)丙二腈（红色1）和2-(6,8-二叔丁基-2-(2-(1,1,7-三甲基-7-叔丁基)-1,2,3,5,6,7-六氢吡啶并[3,2,1-ij]喹啉-9-基)乙烯基)-4H-色烯-4-亚基)丙二腈（红色2）。为了探究这些材料的电致发光性能，制备了以这些材料作为掺杂剂、Alq3为主体的多层有机发光二极管。特别地，通过在发光层中使用红色1作为掺杂剂，器件1在20 mA/cm2时的发光效率和功率效率分别为0.81 cd/A和0.43 lm/W。该器件在7.0 V时的CIE坐标为(0.65, 0.34)，接近红色发射的NTSC标准CIE坐标(0.67, 0.32)。