Synthesis and Spectral Characteristics of Two Novel Intramolecular Charge Transfer Fluorescent Dyes
1.Introduction The intramolecular charge-transfer compound is one kind of the most important molecule materials which is functionalized by electron-donating (D) and electron-accepting (A) groups through a π-conjugated linker. In this paper, two novel ICT fuorescent dyes were synthesized which were (fluorene-2-yl)(9-ethylcarbazole-3-yl) ketene (compound c) and l-phenyl-3-(fluorenone-2-yl)-5-(9-ethylcarbazole-3-yl) -2-pyrazoline (compound e). Their structures were characterized by Ig, 1H NMR and fluorescence spectra. The polarity parameters of ET (30)1 and △f following the Lippert-Mataga equation2 were used to correlate the polarity influence of the solvents and the results indicated that the emission wavelength of the compounds was red-shifted and the Stokes shifts increased with the increase of solvent polarity. In addition, the fluorescence quantum yields of the dyes were obtained.
Carbazole Fluorene Pyrazoline Fluorescence Intramolecular charge transfer (ICT)
Shengmei Song Dong Ju Tao Hu Junfen Li Duxin Li Yanli Wei Shaomin Shuang Peihua Lin Chuan Dong
Research Center of Environmental Science and Engineering,Shanxi University,Taiyuan,030006,P.R.China; Research Center of Environmental Science and Engineering,Shanxi University,Taiyuan,030006,P.R.China
国际会议
江苏镇江
英文
46-48
2008-10-15（万方平台首次上网日期，不代表论文的发表时间）