作者:Cristina Bazzini、Sergio Brovelli、Tullio Caronna、Cristian Gambarotti、Matteo Giannone、Piero Macchi、Francesco Meinardi、Andrea Mele、Walter Panzeri、Francesco Recupero、Angelo Sironi、Riccardo Tubino
DOI:10.1002/ejoc.200400648
日期:2005.4
A systematic study on the synthesis and properties of aza-[5]helicenes bearing one or two nitrogen atoms in selected ring positions is reported for the first time. This photochemical approach can be conveniently applied to the preparation of either mono- or diaza[5]helicenes. The aza[5]helicenes were characterized by NMR spectroscopy, X-ray crystallography, emission spectroscopy, and luminescence lifetime
首次报道了在选定环位置带有一个或两个氮原子的氮杂-[5]螺旋的合成和性质的系统研究。这种光化学方法可以方便地应用于制备单或二氮杂 [5] 螺旋烯。氮杂[5]螺旋烯的特征在于核磁共振光谱、X射线晶体学、发射光谱和发光寿命。观察到的极长的三重态寿命(在几秒钟内)使这些分子成为光电子学和光电子学实际应用的有希望的候选者。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)