期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2008, 期 18, 页码 3129-3140出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.200800139
关键词
pyrimidines; cross-coupling; conjugation; solvatochromism; fluorescence
By using Suzuki-Miyaura cross-coupling reactions we have synthesised a series of star- and banana-shaped oligomers with a pyrimidine unit as the central core and pi-conjugated arms consisting of aromatics bearing electron-donor substituents. The position of the arms as well as the nature of their substituents were investigated with a view to accessing compounds that exhibit interesting light-emitting properties. The best fluorescence quantum yields were obtained with banana-shaped pyrimidines substituted with p-(dimethyl-amino)phenyl or 2-furyl groups. Comparison of the optical properties of oligomers with benzene, pyrimidine or s-triazine as the central unit revealed that the pyrimidinic compounds gave the best results. Some of the oligomers synthesised exhibit solvatochromic properties and pH sensibility, which could allow their use as polarity or pH sensors. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据