含噻二唑聚芴类白光聚合物的合成与发光性能研究

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.

参考文献

[1] Kido J, Hongawa K, Okuyama K, et al. White light-emitting organic electroluminescent devices using the poly(N-vinylcarbazole) emitter layer doped with three fluorescent dyes ［J］. Appl. Phys. Lett., 1994, 64(7):815-817.

[2] Lei G T, Duan L, Wang L D, et al. Progress of white organic light emitting diodes ［J］. Chin. J. Lumin.(发光学报), 2003, 25(3):221-229 (in Chinese).

[3] Zhang A Q, Ying L, Wu H B, et al. White Light-emitting polymers and white polymer light-emitting diodes ［J］. Polym. Bull.(高分子科学), 2009, 6:1-10 (in Chinese).

[4] Du W S, Gao C, Qiu S J. Synthesis and optical spectral properties of polyfluorene derivative with broad emission ［J］. Chin. J. Liq. Cryst. Disp.(液晶与显示), 2011, 26(1):1-4 (in Chinese).

[5] Xu Y, Wang H, Song C L, et al. Synthesis and luminescence characteristics of near-white light-emitting copolymer ［J］. Chin. J. Lumin.(发光学报), 2010, 31(2):274-278 (in Chinese).

[6] Wang J, Yu J H, Li L, et al. Efficient white organic light-emitting devices using a thin 4,4′-bis(2,2′-diphenylvinyl)-1,1′-diphenyl layer ［J］. J. Phys. D: Appl. Phys., 2008, 41(4):045104-1-5.

[7] Xu Y H, Peng J B, Mo Y Q, et al. Efficient polymer white-light-emitting diodes ［J］. Appl. Phys. Lett., 2005, 86(16):163502-1-3.

[8] Hu S J. Efficient Fluorescent/Phosphorescent Hybrid White Polymer Light-emitting Diodes ［D］. Guangzhou: South China University of Technology, 2012 (in Chinese).

[9] Chen Z, Niu Q L, Zhang Y, et al. Efficient green electrophosphorescence with Al cathode using an effective electron-injecting polymer as the host ［J］. ACS Appl. Mater. Interf., 2009, 1(12):2785-2788.

[10] Zhang J, Zhang F H, Yan H G. High efficiency white fluorescent organic light-emitting diodes with HAT-CN hole injection layer ［J］. Chin. J. Liq. Cryst. Disp.(液晶与显示), 2011, 26(4):490-495 (in Chinese).

[11] Liu C B, Zhao J, Su B, et al. Research progress of Re(Ⅰ) complexes in OLEDs ［J］. Chin. J. Liq. Cryst. Disp.(液晶与显示), 2012, 27(6):742-751 (in Chinese).

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.

含噻二唑聚芴类白光聚合物的合成与发光性能研究

关于本站 Cookie 的使用提示

全站搜索

含噻二唑聚芴类白光聚合物的合成与发光性能研究

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索