基于三苯胺和螺(芴-9,9'-氧杂蒽)的星射形蓝光寡聚材料的合成与光电性质

引用本文: 初增泽, 王丹, 张超, 邹德春. 基于三苯胺和螺(芴-9,9'-氧杂蒽)的星射形蓝光寡聚材料的合成与光电性质[J]. 物理化学学报, 2012, 28(08): 2000-2007. doi: 10.3866/PKU.WHXB201206071 shu

Citation: CHU Zeng-Ze, WANG Dan, ZHANG Chao, ZOU De-Chun. Synthesis and Optoelectronic Properties of Blue-Emitting Star-Burst Oli mers Based on Triphenylamine and Spiro(fluorene-9,9'-xanthene)[J]. Acta Physico-Chimica Sinica, 2012, 28(08): 2000-2007. doi: 10.3866/PKU.WHXB201206071 shu

基于三苯胺和螺(芴-9,9'-氧杂蒽)的星射形蓝光寡聚材料的合成与光电性质

基金项目:
国家自然科学基金(50833001) (50833001)

国家重点基础研究发展规划项目(973) (2011CB933300)资助. (973) (2011CB933300)

摘要:

通过Sonogashira 反应合成了基于三苯胺、螺(芴-9,9'-氧杂蒽)及芴的星射形寡聚物. 三种寡聚物(TPA-F、TPA-SFX和TPA-SFXCz)都具有很高的热分解温度, 分别为417、439和425 °C. 差示扫描量热(DSC)分析研究表明, 它们也具有高的玻璃化转变温度(T_g), 都在100 °C以上, 其中两种螺芴取代的寡聚物(TPA-SFX和TPA-SFXCz)的T_g分别达到141和127 °C. 光物理的研究发现, 在薄膜中, TPA-F具有很宽的双发射峰, 峰值为424 和455 nm; 而TPA-SFX 和TPA-SFXCz 仍保持单一蓝光发射, 发射峰分别为434 和442 nm. 这表明将三苯胺非平面结构和螺形取代基团相结合, 能有效抑制在薄膜中聚集和激基缔合物的产生. 电化学的研究表明, 由于引入富电子的三苯胺核心结构, 三者都具有-5.4 eV左右的较高的HOMO能级. 通过旋涂法制备了结构为ITO(氧化铟锡)/PEDOT:PSS(聚3,4-乙撑二氧噻吩:聚苯乙烯磺酸盐)/寡聚物/TPBI(1,3,5-三(1-苯基-1H-苯并咪唑-2-基)苯)/LiF/Al 电致发光器件. 器件测试结果表明, TPA-SFX的器件具有最好的光电性能. 以它为发光层, 获得最大亮度为2680 cd·m^-2、最大电流效率为0.35 cd·A^-1、色坐标为(0.17, 0.13)的蓝光器件.

关键词:

English

Synthesis and Optoelectronic Properties of Blue-Emitting Star-Burst Oli mers Based on Triphenylamine and Spiro(fluorene-9,9'-xanthene)

1.
Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
Received Date: 07 May 2012
Available Online: 10 July 2012
Fund Project:
国家自然科学基金(50833001)

国家重点基础研究发展规划项目(973) (2011CB933300)资助.

Abstract:

Three star-burst conjugated oli mers based on triphenylamine (TPA), fluorene and spiro (fluorene-9,9'-xanthene) (SFX) have been synthesized via the Sonogashira cross-coupling reaction. These well-defined oli mers possess high decomposition temperatures (T_d) at 417, 439, and 425 °C, respectively. Differential scanning calorimetry (DSC) demonstrates two oli mers which incorporate the SFX unit, TPA-SFX and TPA-SFXCz, possess higher glass transition temperatures (T_g) at 141 and 127 ° C, respectively, compared with 101 °C for TPA-F. The investigation of their optical properties shows TPA-SFX and TPA-SFXCz exhibit a single blue emission in film with emission peaks at 434 and 442 nm, respectively, whereas TPA-F shows a broad double-peak emission located at 424 and 455 nm, which implies the nonplanar TPA and spiro SFX moieties can effectively restrict the formation of aggregates or excimers. Electrochemical investigations show that these oli mers have relatively high HOMO levels at around -5.4 eV due to incorporation of the electron-rich TPA core. Electroluminescence (EL) devices with a configuration of ITO (indium tin oxide)/PEDOT:PSS (poly(3,4-ethylenedioxythiophene): poly (styrenesulfonate))/ oli mer/TPBI (1,3,5-tris(1-phenyl-1H -benzimidazol-2-yl)benzene)/LiF/Al were constructed using these oli mers as the emitter by spin-coating, with TPBI as the electron-transporting and hole-blocking layer. The device using TPA-SFX as the emitting layer exhibits bright blue emission with the maximum brightness and maximum current efficiency of 2680 cd·A^-2 and 0.35 cd·A^-1, and CIE color coordination of (0.17, 0.13).

Key words:

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

基于三苯胺和螺(芴-9,9'-氧杂蒽)的星射形蓝光寡聚材料的合成与光电性质

English

Synthesis and Optoelectronic Properties of Blue-Emitting Star-Burst Oli mers Based on Triphenylamine and Spiro(fluorene-9,9'-xanthene)

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

基于三苯胺和螺(芴-9,9'-氧杂蒽)的星射形蓝光寡聚材料的合成与光电性质

English

Synthesis and Optoelectronic Properties of Blue-Emitting Star-Burst Oli mers Based on Triphenylamine and Spiro(fluorene-9,9'-xanthene)

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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