A sensitive fluorescent chemosensor for anions based on a styryl–boradiazaindacene framework
摘要:
Long wavelength emitting, extended conjugation boradiazaindacenes are novel dyes with considerable ICT character. By appending a dipicolylaminylethylamine group, the parent compound was transformed into a fluorescent dye with a strong chelating ability for Zn(II) ions. The zinc complex which has bright orange fluorescence, reversibly signals anions with very large changes in both the absorption and the emission spectra. The remarkable change in the emission intensity is explained in relation to the electron donating capacity of the substituent on the styryl functionality. (c) 2007 Elsevier Ltd. All rights reserved.
为了开发一种用于液体染料激光器的光稳定有效的吡咯亚甲基化合物,合成了三种同类的市售吡咯烯567(PM567)激光染料,并对其光物理性质,激光发射效率和光化学稳定性进行了研究。通常,吡咯亚甲基生色团的C-8处芳基的存在增加了光稳定性。具有C-8三甲氧基苯基部分的同类物之一显示出比PM567显着改善的激射参数。与PM567相比,新染料的光化学稳定性是其2倍,而在显着较低的浓度下,其激光发射效率与PM567相当。1 O 2)和与1 O 2反应的可能性。我们的计算与实验结果相符,并表明系统设计新的吡咯亚甲基生色团衍生物可能会导致改进的激光染料分子。