Synthesis and characterization of fluorene‐based oligomers and polymers incorporating
<i>N</i>
‐arylphenothiazine‐
<i>S,S</i>
‐dioxide units
作者:Kiran T. Kamtekar、Katja Dahms、Andrei S. Batsanov、Vygintas Jankus、Helen L. Vaughan、Andrew P. Monkman、Martin R. Bryce
DOI:10.1002/pola.24527
日期:2011.3
A series of 3,7‐bis(9,9‐di‐n‐hexylfluoren‐2‐yl)‐N‐arylphenothiazine‐S,S‐dioxide trimers and (9,9‐di‐n‐octylfluorene‐2,7‐diyl‐co‐N‐arylphenothiazine‐S,S‐dioxide) co‐polymers, with varying ratios of phenothiazine‐S,S‐dioxide units, have been prepared in good yields by palladium‐catalyzed cross‐coupling reactions. The materials are deep blue emitters and show no solvatochromism or evidence for an intramolecular
一系列3,7-双(9,9-二-n-己基芴-2-基)-N-芳基吩噻嗪-S,S-二氧化物三聚体和(9,9-二-n-辛基芴-2,7-二基-共- ñ -arylphenothiazine- S,S二氧化物)共聚物,与吩噻嗪的不同比率S,S二氧化物单元,已在良好的产率通过钯催化的交叉偶联反应来制备。这些材料是深蓝色发射体,没有溶剂溶变色现象或分子内电荷转移状态的证据。三聚体的光致发光量子产率在溶液中为ϕ PL的15–30%,在薄膜中为14–25%。聚合物在溶液中显示出很高的值(ϕ PL 74–84%),并且ϕ胶卷中的PL值为28–47%。对于结合了吩噻嗪-S,S-二氧化物单元的15%的聚合物,估计的HOMO能级在-5.64至-5.62 eV之间。类似的N-芳基吩噻嗪共聚物显示出明显的红移吸收和发射。还介绍了溶液电化学数据和密度泛函理论计算。©2010 Wiley Periodicals,Inc. J