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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
收稿日期:2013-07-10,
修回日期:2013-09-03,
纸质出版日期:2013-12-10
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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): 1567-1571
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): 1567-1571
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): 1567-1571 DOI: 10.3788/fgxb20133412.1567.
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): 1567-1571 DOI: 10.3788/fgxb20133412.1567.
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/m
2
,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。
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/m
2
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.
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).
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