Light-emitting persistent radicals for efficient sensor devices of solvent polarity
                                
                                    
                                        作者:Marc López、Dolores Velasco、Francisco López-Calahorra、Luis Juliá                                    
                                    
                                        DOI:10.1016/j.tetlet.2008.06.040
                                    
                                    
                                        日期:2008.8
                                    
                                    Radical adduct 1, and the novel [4-(N-indolyl)-2,6-dichlorophenyl] bis(2,4,6-trichlorophenyl)methyl radical (2-) exhibit intense fluorescence emission in cyclohexane in the red wavelength region. The intensity and the wavelength of the emission band are drastically dependent on the polarity of the solvent. Besides, radical adduct 2- has been fully characterized by differential scanning calorimeter, showing a high thermal stability and a clear glass nature to form excellent films. (C) 2008 Elsevier Ltd. All Fights reserved.