Impact of non-symmetric 2,9,10-aryl substitution on charge transport and optical properties of anthracene derivatives
作者:Tomas Serevičius、Povilas Adomėnas、Ona Adomėnienė、Karolis Karpavičius、Jonas Bucevičius、Regimantas Komskis、Gediminas Kreiza、Vygintas Jankauskas、Karolis Kazlauskas、Saulius Juršėnas
DOI:10.1016/j.dyepig.2015.06.010
日期:2015.11
proposed. The anthracenes were intentionally decorated with non-symmetric aryls to improve charge transport properties. The impact of non-symmetric aryl substituents on optical and electrical properties was thoroughly studied. Non-symmetric 9,10-aryl substituents ensured blue emission in the range of 422–436 nm and fluorescence quantum efficiency of ca. 0.45, while the type of substituents had a minor
提出了一种新的合成非对称2,9,10-芳基蒽的方法。蒽故意用非对称芳基修饰,以改善电荷传输性能。彻底研究了非对称芳基取代基对光学和电学性质的影响。非对称的9,10-芳基取代基可确保在422-436 nm范围内发出蓝色光,并确保约40的荧光量子效率。0.45,而取代基的类型由于其扭曲的构型对激发态失活的影响很小。在稀溶液和刚性聚合物基质中获得的化合物的光学性质表明,主要的非辐射衰变机理是由于系统间交叉(ISC)所致,该系统间交叉主要受2-苯基取代的支配。密度泛函理论计算证实了有效的ISC的单线态和三线态能级的良好对齐。一些非对称取代的蒽衍生物显示出很高的空穴漂移率,达到10在溶液处理的纯净薄膜中为-2 cm 2 / Vs。