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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于螺(芴-9,9'-氧杂蒽)和芴的共聚物蓝光材料的合成与表征
DOI: 10.11777/j.issn1000-3304.2015.14182, PP. 97-105
Keywords: 电致发光,蓝光,芴,螺芴氧杂蒽,光稳定性
Abstract:
通过控制缩合反应物中溴取代基的位置,得到了3种基于螺(芴-9,9'-氧杂蒽)的单体.利用Suzuki偶联反应得到3种蓝光聚合物CSSFX,USSFX和DSSFX.聚合物USSFX和DSSFX具有较高的玻璃化转变温度和热分解温度.3种聚合物表现出较低并且相近的最高占有轨道能级(-5.80eV至-5.93eV)和最低未占有轨道能级(-2.80eV至-3.01eV).螺(芴-9,9'-氧杂蒽)单元的引入可降低聚合物DSSFX的最低未占有轨道能级到-3.01eV,同时降低聚合物USSFX的最高占有轨道能级到-5.93eV,聚合物USSFX较低的最高占有轨道能级使其具有较好的空穴注入性能.不同气氛下的高温退火实验表明,聚合物USSFX即使在空气中长时间高温退火以后,仍能保持稳定的蓝光发射.不同拓扑结构螺(芴-9,9'-氧杂蒽)单元的引入,可以有效调节蓝光聚合物的综合发光性能.
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