Fluorene-containing polyhedral oligomericsilsesquioxanes modified hyperbranched polymer for white light-emitting diodes with ultra-high color rendering index of 96
Fluorene-containing polyhedral oligomericsilsesquioxanes modified hyperbranched polymer for white light-emitting diodes with ultra-high color rendering index of 96
复制标题
含芴多面体低聚倍半硅氧烷改性超支化聚合物用于超高显色指数96的白光发光二极管
DOI：
10.1016/j.jssc.2021.122122
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发表时间：
2021-03
影响因子：
3.3
通讯作者：
Hua Wang
中科院分区：
文献类型：
--
作者：
Xiaozhen Wei;Mixue Wang;Weixuan Zhang;Haocheng Zhao;Yuling Wu;Bingshe Xu;Yanqin Miao;Hua Wang
本文以聚芴（PF）为支化剂，以螺[3.3]庚烷-2，6-二螺芴（SDF）为共轭支化点，以4，7-二噻吩基-2，1，作为橙色发光单元的3-苯并噻二唑（DBT）和含芴的多面体低聚倍半硅氧烷（POSSs）作为共轭连接单体被引入到主链中以获得白光发射。通过调节含芴POSSs的投料比（1 ~ 20mol%），探讨了POSSs对超支化白光发光聚合物的影响机理。结果表明，所合成的聚合物仍保持较高的热稳定性，并表现出改善的非晶态薄膜形貌和疏水性，这有利于在器件制备中获得优化的空穴传输层聚（3，4-乙撑二氧噻吩）-聚（苯乙烯磺酸盐）（PEDOT：PSS）层与聚合物发光层之间的界面。结果表明，以超支化聚合物为发光层制备的器件均实现了白色发光，优化后的器件具有良好的电致发光性能，其CIE坐标为（0.32，0.33），最大显色指数（CRI）为96。含芴的POSSs改性超支化共聚物具有宽的半峰全宽（>284 nm），是制备日光型白色聚合物发光二极管的理想材料。
In this work, a series of hyperbranched white-emitting conjugated polymers were synthesized with polyfluorene (PF) as the branches and three-dimensional-structured spiro[3.3]heptane-2,6-dispirofluorene (SDF) as the conjugated branching point by one-pot Suzuki polycondensation, where 4,7-dithienyl-2,1,3-benzothiadiazole (DBT) as orange-light emitting unit and fluorene-containing polyhedral oligomericsilsesquioxanes (POSSs) as conjugated linking monomer were introduced into the backbones to obtain white-light emission. The influence mechanism of POSSs for hyperbranched white-emitting polymers was explored by adjusting the feeding ratios of fluorene-containing POSSs (from 1 to 20 mol%). The results indicated that the synthesized polymers still maintained the high thermal stabilities, and exhibited the improved amorphous film morphology and hydrophobicity, which were beneficial for obtaining optimized interface between the aqueous hole transport layer Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT: PSS) layer and polymer light-emitting layer in device fabrication. As a consequence, all of the fabricated devices with the hyperbranched polymers as light-emitting layers realized white light-emission, and the optimized device exhibite good electroluminescent (EL) performance with Commission Internationale de l’Eclairage (CIE) coordinates at (0.32, 0.33) and maximum color rendering index (CRI) of 96. The fluorene-containing POSSs modified hyperbranched copolymers with broad full width at half maximum (>284 nm) are attractive candidates for sunlight-style white polymer light-emitting diodes.
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影响因子：
3.1
作者：
Liu, Dongmei;Dong, Gaoyun;Li, Xia
通讯作者：
Li, Xia
DOI：
10.1021/jp075891c
发表时间：
2007-11
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
K. Zeng;Sixun Zheng
通讯作者：
K. Zeng;Sixun Zheng
影响因子：
2.1
作者：
Ghazanfar Nazir;Afaq Ahmad;Muhammad Farooq Khan;Saad Tariq
通讯作者：
Ghazanfar Nazir;Afaq Ahmad;Muhammad Farooq Khan;Saad Tariq
影响因子：
--
作者：
D. Seebach;A. Beck;A. Heckel
通讯作者：
D. Seebach;A. Beck;A. Heckel
影响因子：
29.4
作者：
Wei Yu;Jian Pei;Weimin Huang;A. Heeger
通讯作者：
Wei Yu;Jian Pei;Weimin Huang;A. Heeger