文献类型：期刊文献

英文题名：Facile Synthesis of Nitrogen-Containing Six-Membered Benzofuzed Phenophosphazinine Oxides and Studies of the Photophysical Properties

作者：Ye, Wenqiang[1];Li, Xiaobin[1];Ding, Bingbing[1];Wang, Chenchen[1];Shrestha, Mohini[1];Ma, Xiang[1];Chen, Yifeng[1];Tian, He[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat & Joint Int Res Lab Precis Chem &, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：85

期号：5

起止页码：3879

外文期刊名：JOURNAL OF ORGANIC CHEMISTRY

收录：;EI(收录号：20201208323918);WOS:【SCI-EXPANDED(收录号:WOS:000518875700092)】；

基金：This work was supported by the Youth 1000-Talent Plan Program, East China University of Science and Technology for startup funding, NSFC/China (21421004 and 21702060), Shanghai Municipal Science and Technology Major Project (2018SHZDZX03) and the Program of Introducing Talents of Discipline to Universities (B16017), and the Fundamental Research Funds for the Central Universities (WJ1814012). The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for the help on NMR analysis. Y.C. thanks Prof. Jianhua Su and Prof. Zhiyun Zhang for helpful discussion. The authors thank the anonymous reviewer's comments for improving the manuscript.

语种：英文

外文关键词：Quantum theory - Fluorescence - Cyclization

摘要：A facile synthesis of nitrogen-containing six-membered benzofuzed phosphacycles has been described. This cyclization reaction triggered by Tf2O provides an expedient protocol of phosphacycles with a simple operation at mild conditions. The preliminary photophysical studies of these novel materials reveal that the fluorescence intensity enhances with the molecular aggregation in the solid state and that the introduction of the sterically bulky phenanthrene group into the phosphacycles allows a significant increase in the fluorescence quantum yield.