Synthesis and Photophysical Properties of Pyrrole/Polycyclic Aromatic Units Hybrid Fluorophores
作者:Chang-Shun Li、Ya-Hsuan Tsai、Wei-Chen Lee、Wen-Jang Kuo
DOI:10.1021/jo100158a
日期:2010.6.18
polycyclic aromatic units to form the hybrid fluorophores. The photophysical properties and thermal properties of the fluorophores were characterized. Most of the pyrrole fluorophores emitted blue light and exhibited high quantum efficiency. The fluorescence properties of these pyrrole fluorophores were induced by manipulating the surrounding polycyclic aromatic units. When the central pyrrole core was incorporated
通过两步合成策略开发了一系列的吡咯/多环芳族单元杂化荧光团。他们的中心芳基取代的吡咯核心是通过Paal-Knorr吡咯合成反应构建的。还详细讨论了反应条件和机理。在中心吡咯芯上封端的三氟甲磺酸酯使该芯能够结合各种多环芳族单元。Buchwald-Hartwig胺化反应和Suzuki-Miyaura交叉偶联反应将三氟甲磺酸盐封端的吡咯与N结合-苯基萘-1-胺和各种多环芳族单元形成杂化荧光团。表征了荧光团的光物理性质和热性质。大部分吡咯荧光团发出蓝光并显示出高量子效率。这些吡咯荧光团的荧光特性是通过操纵周围的多环芳族单元来诱导的。当中心吡咯核与氨基或萘部分结合时,荧光团1和2的荧光效率和热稳定性很低(ϕ f <0.35,T g<140°C)。刚性和高荧光部分(例如pyr基,9,9-二甲基芴基,9,9-二苯基芴基和螺芴基)被接枝到吡咯上。荧光团3 - 6具有高的荧光效率(φ ˚F > 0.99)和