Synthesis and photostability of 1,4-bis(5-phenyloxazol-2-yl)benzene (POPOP) structural isomers and their trimethylsilyl derivatives
作者:Maxim S. Skorotetcky、Oleg V. Borshchev、Nikolay M. Surin、Yaroslav Odarchenko、Sergey A. Pisarev、Svetlana M. Peregudova、Karl W. Törnroos、Dmitry Chernyshov、Dimitri A. Ivanov、Sergey A. Ponomarenko
DOI:10.1016/j.dyepig.2017.02.006
日期:2017.6
synthetic method for preparation of linear phenyloxazoles and their organosilicon derivatives under mild conditions via a combination of van Leusen and direct CH arylation reactions is reported. It was used for the synthesis of a novel trimethylsilyl (TMS) derivative of blue laser dye 1,4-bis(5-phenyloxazol-2-yl)benzene (POPOP) and its structural isomer 1,4-bis(2-phenyloxazol-5-yl)benzene (isoPOPOP) with
在这项工作中,报道了一种通用的合成方法,该方法可通过温和条件下通过范鲁森和直接C H芳基化反应的组合来制备线性苯基恶唑及其有机硅衍生物。它用于合成蓝色激光染料1,4-双(5-苯基恶唑-2-基)苯(POPOP)的新型三甲基硅烷基(TMS)衍生物及其结构异构体1,4-双(2-苯基恶唑-具有和不具有TMS取代基的5-基)苯(isoPOPOP)。所有化合物均显示出高的光致发光量子产率和大的摩尔消光系数,这对于它们的TMS衍生物而言进一步增加。稀释的THF溶液中染料加速光降解的测量表明:POPOP型化合物的稳定性比其isoPOPOP型异构体高两倍,而与TMS取代基的存在与否无关。循环伏安法(CV)研究表明,POPOP型染料与其isoPOPOP型异构体相比在电化学上更稳定。染料前沿能级的量子化学TD DFT计算与CV获得的实验数据非常吻合。X射线单晶衍射实验表明,染料的晶格之间存在明显的结构差异。由于