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对含蒽核心的第一代π-共轭不对称树状化合物PD-G1的光学性质进行研究。研究发现,相对于G-OH,共轭长度的增加导致了其在吸光、荧光发射强度与范围的提升,蒽核部分的吸光强度的增加,显示其能量漏斗效应;荧光淬灭实验表明,能与缺电子化合物硝基苯、富电子化合物对二甲氧基苯形成离子对产生荧光淬灭(淬灭常数分别为144.5,557和169.6 L/mol),说明能同时作为电子受体与电子供体,且对2,4,6-三硝基甲苯(TNT)显示出良好的淬灭响应性,其淬灭常数能达到约557 L/mol,淬灭效率能达到74%,因此,在光捕获、发光及荧光传感材料方面有潜在应用价值。
The optical properties of the first generation π-conjugated asymmetric dendrimer containing anthracene core PD-G1 were studied. Compared with G-OH, the increase of conjugation length led to its increase in absorption and fluorescence emission intensity and range, and the increase of absorption intensity of anthracene nucleus, which showed its energy funnel effect. Fluorescence quenching experiments showed that With the electron-deficient compound nitrobenzene, the electron-rich compound p-dimethoxybenzene forms a fluorescence quenching (quench constant of 144.5,557 and 169.6 L / mol, respectively), indicating that both electron acceptors and electron donors And showed good quenching response to 2,4,6-trinitrotoluene (TNT) with a quenching constant of about 557 L / mol and a quenching efficiency of 74%. Therefore, in the light Capture, luminescence and fluorescence sensing materials have potential applications.