The following formula is an example of a phosphole compound of the present invention. The phosphole compound of the present invention has the characteristic of maintaining a high fluorescence quantum yield in a wide range of solvents from low-polarity solvents to high-polarity solvents, as well as the characteristic in which the fluorescence wavelength shifts to the longer wavelength side as the polarity of the solvent increases. Because of these characteristics, the phosphole compound of the present invention is expected to be used, for example, for quantitatively determining the polarity in the environment therearound by using the absorption wavelength and fluorescence wavelength thereof, or used as a new fluorescent probe dye or a highly efficient luminescent material in organic electronic devices.
以下公式是本发明的一种膦烯化合物的示例。本发明的膦烯化合物具有在从低极性溶剂到高极性溶剂的广泛范围内保持高荧光量子产率的特性,以及随着溶剂极性增加,荧光波长向较长波长侧移动的特性。由于这些特性,本发明的膦烯化合物预计可用于例如通过使用其吸收波长和荧光波长来定量确定其周围环境的极性,或者用作新的荧光探针
染料或在有机电子器件中作为高效
发光材料。