structural molecules with various electron donors were synthesized and fully characterized. Influence of electron-donating strength on optical properties was investigated by the systematic alteration of the electron donors. The optical properties of the dyes were successfully tuned by choosing different electron donors. All the dyes in solution show strong one-photon excited fluorescence (OPEF) and high quantum
合成了六个具有各种电子给体的新型荧光供体-π桥受体(D-π-A)结构分子,并对其进行了充分表征。通过电子供体的系统性变化,研究了电子给体强度对光学性能的影响。通过选择不同的电子给体可以成功地调节
染料的光学性能。溶液中的所有
染料均显示出强大的单光子激发荧光(OPEF)和高量子产率。随着供体的电子给体强度的增加,具有
二苯胺的
染料5和具有(4,4'-
二乙氧基苯基)
氨基取代基的
染料6表现出强的双光子激发荧光(TPEF)和大的双光子吸收(
TPA)交叉截面值为5的1378 GM和5654的1654 GM6。通过量子
化学计算和X射线晶体学详细描述了结构与性质之间的关系。活细胞成像实验的结果表明它们在一光子或两光子荧光显微镜
生物成像应用中的价值。