Saturated and stabilized white electroluminescence with simultaneous three-color emission from a six-armed star-shaped single-polymer system

文献信息

发布日期 2015-09-28
DOI 10.1039/C5PY01480H
影响因子 5.582
作者

Yuan-Da Jiu, Cheng-Fang Liu, Jian-Yun Wang, Yi Jiang, Wei-Dong Xu, Xin-Wen Zhang


查看原文

摘要

A six-armed star-shaped single-polymer system consisting of three simultaneous emission species, 7,7′,7′′-(5,5,10,10,15,15-hexahexyl-10,15-dihydro-5H-diindeno[1,2-a:1′,2′-c]fluorene-2,7,12-triyl)tris(4-(4-(9H-carbazol-9-yl)phenyl)benzo[c] [1,2,5]thiadiazole) (TRCZ) as the green emissive core, polyfluorene (PF) as blue emissive arms and 4,7-bis(4-hexylthiophen-2-yl) benzo[c][1,2,5] thiadiazole (BBT) as red emissive dopants, has been designed and synthesized. The resulting polymers (P1–P3) exhibited excellent thermal stability and solution processability. A combination of UV-absorption, photoluminescence (PL) and electroluminescence (EL) measurements has provided an opportunity to elucidate the various properties of the polymers, which is favorable to understand the mechanism of the origin of white emission in this system. The incomplete energy transfer can be realized by adjusting the doping concentration of different components in the single-polymer system, facilitating white emission in a facile way. Thus, by means of modulating the doping concentration of TRCZ and BBT, P1–P3 are found to exhibit high-color-quality and stable white EL. For P2 with suitable doping contents, a single-emissive-layer device exhibited a promising white EL performance with a luminous efficiency (LE) of 1.45 cd A−1, an external quantum efficiency (EQE) of 1.37% and saturated Commission Internationale d'Eclairage (CIE) coordinates of (0.33, 0.33), which matches exactly with the standard white color. The comparative experimental results further confirm that the performance of this six-armed single-polymer system is superior to that of the linear single-polymer system and the polymer-blend system in terms of color purity and stability. The achievement of pure and stable white emission is mainly attributed to the multi-armed hyperbranched structures, which play an important role in fine controlling the incomplete energy transfer as well as preventing intermolecular interactions and phase separation in a star-shaped single-polymer system.

相关文献

Role of the carbon source in the transformation of amorphous carbon to graphene during rapid thermal processing

Yong Zhou, Xiaowei Xu, Aiying Wang, Kwang-Ryeol Lee

2019-04-08 Paper

DOI: 10.1039/C9CP01305A

Enhancing high harmonic generation by the global optimization of a two-color chirped laser field

Mohammad Mofared, Elnaz Irani, Rasoul Sadighi-Bonabi

2019-04-06 Paper

DOI: 10.1039/C8CP07619G

X-ray emission spectroscopy: an effective route to extract site occupation of cations

Anuj Bhargava, Cindy Y. Chen, Kenneth D. Finkelstein, Richard D. Robinson

2018-09-17 Paper

DOI: 10.1039/C8CP04628J

Reactive convective-dissolution in a porous medium: stability and nonlinear dynamics

Silvana S. S. Cardoso

2018-07-26 Paper

DOI: 10.1039/C8CP03064B

Conformational changes of DNA induced by a trans-azobenzene derivative via non-covalent interactions

Hong Zhang, Haohao Fu, Antonio Monari

2018-08-06 Paper

DOI: 10.1039/C8CP03836H

Effects of double-atom vacancies on the electronic properties of graphyne: a DFT investigation

Si Wu, Yuan Yuan, Hongqi Ai, Baotao Kang

2018-08-10 Paper

DOI: 10.1039/C8CP03359E

How does the electric current propagate through fully-hydrogenated borophene?

Jutao Jiao, Yusheng Hou, Hui Wang, Dapeng Wu, Tianxing Wang, Zhaoming Fu, Guoliang Xu, Ruqian Wu

2018-07-30 Paper

DOI: 10.1039/C8CP04272A

Endohedral metal-nitride cluster ordering in metallofullerene–NiII(OEP) complexes and crystals: a theoretical study

Vasilii Dubrovin, Bernd Büchner, Alexey A. Popov, Stanislav M. Avdoshenko

2019-02-20 Communication

DOI: 10.1039/C9CP00634F

您可能还喜欢

化合物问答

如何储存1,2-环己二酮环乙缩醛(CAS号:4746-96-7)?

1,2-环己二酮环乙缩醛应储存在阴凉、干燥、通风良好的地方,避免阳光直射。建议使用密封容器保存,并保持环境温度在室温范围内,远离火源和热源。

4746-96-71,4-Dioxaspiro[4.5]d...
化合物问答

Ecopladib(CAS号:381683-92-7)的市场或研究趋势如何?

Ecopladib作为一种新型的药物,主要应用于治疗高胆固醇等疾病。目前,市场和研究趋势显示,Ecopladib因其独特的药理作用而受到关注。随着对心血管疾病治...

381683-92-7Ecopladib
化合物问答

2,3-Dimethyl-3H-imidazo[4,5-c]pyridine(CAS号:52538-09-7)通常如何合成?

2,3-二甲基-3H-咪唑[4,5-c]吡啶通常通过咪唑和2,3-二甲基吡啶的缩合反应合成。具体来说,将咪唑和2,3-二甲基吡啶在适当的溶剂中进行加热或加压反应...

52538-09-72,3-Dimethyl-3H-imid...
化合物问答

2,3,4,5-tetrahydro-1H-3-苯并氮杂环;盐酸盐(CAS号:17379-01-0)的市场或研究趋势如何?

该化合物在药物化学和有机合成中有一定的应用。近年来,随着对新型药物化合物的需求增加,该化合物的研究趋势主要集中在探索其生物活性,尤其是其在神经系统疾病治疗中的潜...

17379-01-02,3,4,5-Tetrahydro-1...
化合物问答

解草嗪(CAS号:68-90-6)安全吗?

解草嗪具有一定的化学毒性,因此在操作过程中需要采取适当的防护措施。应避免吸入、皮肤接触和眼睛接触。处理时应佩戴化学防护手套、实验服和护目镜。

68-90-6(2-Ethyl-1-benzofura...
化合物问答

如何储存盐酸甘氨酸丁酯(CAS号:13048-99-2)?

盐酸甘氨酸丁酯应储存在阴凉、干燥、通风良好的地方,避免阳光直射和高温环境,温度应控制在25℃以下。储存容器应密封,避免与空气中的水分和酸性物质接触,以防发生水解...

13048-99-2Butyl glycinate hydr...
化合物问答

什么是2-Iodo-N,N-dimethylbenzamide(CAS号:54616-46-5)?

2-碘-N,N-二甲基苯胺是一种有机化合物,化学名为2-Iodo-N,N-dimethylbenzamide。其分子式为C<sub>9</sub>H<sub>1...

54616-46-52-Iodo-N,N-dimethylb...
化合物问答

如何储存2-氨基-N-环己基乙酰胺(CAS号:16817-90-6)?

应储存于阴凉、干燥、通风良好的地方,避免高湿度和光照,最好存放在密封容器中。

16817-90-6N-Cyclohexylglycinam...
化合物问答

5-溴-2-(4H-1,2,4-三唑-4-基)吡啶(CAS号:959240-99-4)的市场或研究趋势如何?

随着医药、农药和新材料领域的发展,该化合物作为关键中间体的应用日益增多。特别是在药物合成中,由于其独特的化学性质,可以用于合成多种药物分子。未来的研究趋势可能集...

959240-99-45-Bromo-2-(4H-1,2,4-...
化合物问答

2,4-二溴-6-三氟甲基嘧啶(CAS号:785778-00-9)通常如何合成?

2,4-二溴-6-三氟甲基嘧啶通常通过溴化反应合成。首先,将6-三氟甲基嘧啶与溴化剂(如液溴)在适当的溶剂(如二氯甲烷、四氢呋喃)中反应,加入适当的催化剂(如四...

785778-00-92,4-Dibromo-6-(trifl...

来源期刊

Polymer Chemistry

Polymer Chemistry
CiteScore: 8.6
自引率: 7.3%
年发文量: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

推荐供应商

免责声明
本页面提供的学术期刊信息仅供参考和研究使用。我们与任何期刊出版商均无关联,也不处理投稿事宜。如有投稿相关咨询,请直接联系相关期刊出版商。
如发现页面信息有误,请发送邮件至 support@chemtradehub.com 联系我们。我们将及时核实并处理您的问题。