Velasco Dolores, Castellanos Sonia, López Marc, López-Calahorra Francisco, Brillas Enric, Julia Luis
Departament de Química Orgànica, Institut de Nanociències I Nanotecnologia, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
J Org Chem. 2007 Sep 28;72(20):7523-32. doi: 10.1021/jo0708846. Epub 2007 Sep 7.
Synthesis and characterization of new carbazolyl derivatives with a pendant stable radical of the TTM (tris-2,4,6-trichlorophenylmethyl radical) series are reported. The EPR spectra, electrochemical properties, absorption spectra, and luminescent properties of these radical adducts have been studied. All of them show electrochemical amphotericity being reduced and oxidized to their corresponding stable charged species. The luminescence properties of them cover the red spectral band of the emission. The luminescence of the electron-rich carbazole adducts shows the donor-acceptor nature of the excited state. On the other hand, the EPR parameters of these radical adducts show an imperceptible variation with the substituents in the carbazole.
报道了具有TTM（三-2,4,6-三氯苯基甲基自由基）系列稳定侧基的新型咔唑基衍生物的合成与表征。研究了这些自由基加合物的电子顺磁共振光谱、电化学性质、吸收光谱和发光性质。它们均表现出电化学两性，可被还原和氧化为相应的稳定带电物种。它们的发光性质覆盖了发射的红色光谱带。富电子咔唑加合物的发光显示出激发态的供体-受体性质。另一方面，这些自由基加合物的电子顺磁共振参数随咔唑中的取代基呈现出难以察觉的变化。
