发光学报, 2013, 34 (12): 1567, 网络出版: 2013-12-20   

含噻二唑聚芴类白光聚合物的合成与发光性能研究

Synthesis and Luminescent Properties of Polyfluorene Containing Thiadiazole as White Light-emitting Polymer
逄辉 1,2,*曹建华 1,2隋岩 1,2李雅敏 1,2华瑞茂 1,2,3
作者单位
1 石家庄诚志永华显示材料有限公司 北京研发中心, 北京100084
2 河北省平板显示材料工程技术研究中心, 河北 石家庄050091
3 清华大学 化学系, 北京100084
摘要
通过Suzuki偶联反应将2,7-二溴-9,9-二辛基芴(Br-DOF)、2,7-二硼酸-9,9-二辛基芴(B-DOF)和4-(8-(2,7-二溴-9-辛基芴)辛氧基)-N-4-(7-(4-(二苯胺基)苯基)苯并噻二唑)苯基-二苯胺(Br-TAF)共聚,合成了白光聚合物PDOF-TAF。以PDOF-TAF为发光层,溶液旋涂制备了非掺杂型单层白光有机电致发光二极管,色坐标为(0.23,0.18)。通过插入电子传输层TPBI和空穴传输层PVK得到的白光器件发射光谱覆盖了410~700 nm区域,色坐标从(0.23,0.18)调整到(0.24,0.32),亮度达到2 020 cd/m2,电流效率达到1.4 cd/A。实验结果表明,PDOF-TAF是一种很好的白光聚合物发光材料,在WOLED中将有很好的应用前景。
Abstract
Polyfluorene containing thiadiazole (PDOF-TAF) was synthesized by palladium-catalyzed Suzuki cross coupling reaction of 2,7-dibromo-9,9-dioctyl-9H- fluorene (Br-DOF), 9,9-dioctyl-9H-fluorene-2,7-diyldiboronic acid (B-DOF) and 4- (8-(2,7-dibromo-9-octyl-9H-fluoren-9-yl)octyloxy)-N-(4-(7-(4-(diphenylamino) phenyl)benzo[c][1,2,5]thiadiazol-4-yl)phenyl)-N-phenylaniline (Br-TAF). The synthesized polymer was applied as white light-emitting polymer and was used as the emitting layer to prepare the non-doped white organic light-emitting diodes (WOLED) by spin-coating. The color coordinates locate at (0.23, 0.18). By inserting 1,3,5-tris(1-phenyl-1H-benzimidazol-2-yl)benzene (TPBI) as electron transport layer and Poly(N-vinylcarbazole) (PVK) as hole transport layer, the emission spectra of the diode cover 410~700 nm visible region, and the color coordinates shift to (0.24, 0.32), locating close to the white point. In addition, the luminescence and current efficiency can reach up to 2 020 cd/m2 and 1.4 cd/A, respectively, indicating that the synthesized polymer has highly potential application as the material of white light-emitting layer in WOLED.

逄辉, 曹建华, 隋岩, 李雅敏, 华瑞茂. 含噻二唑聚芴类白光聚合物的合成与发光性能研究[J]. 发光学报, 2013, 34(12): 1567. PANG Hui, CAO Jian-hua, SUI Yan, LI Ya-min, HUA Rui-mao. Synthesis and Luminescent Properties of Polyfluorene Containing Thiadiazole as White Light-emitting Polymer[J]. Chinese Journal of Luminescence, 2013, 34(12): 1567.

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