4-Cyanocoumarin derivatives which have a distinct sensitivity to visible light, distinct luminescent ability, and satisfactory applicability for photochemical polymerization, dye lasers, and organic electroluminescent elements. Since most of the derivatives have a fluorescent maximum wavelength of 600 to 650 nm, particularly, 610 to 630 nm, they are extremely useful as luminescent agents for organic EL elements which emit visible light in a red-color region, and can be quite useful as luminescent agents in organic EL elements and laser-active substances in dye lasers, as well as luminous bodies as lighting sources for lighting devices, and information displays for visually displaying information.
4-
氰基
香豆素衍
生物对可见光具有明显的敏感性,具有明显的发光能力,在光
化学聚合、
染料激光器和有机电致发光元件方面具有令人满意的适用性。由于大多数衍
生物的荧光最大波长在 600 至 650 纳米之间,特别是 610 至 630 纳米之间,因此它们作为有机电致发光元件的发光剂非常有用,因为有机电致发光元件发出的可见光为红光,而它们作为有机电致发光元件中的发光剂和
染料激光器中的激光活性物质,以及作为照明设备的照明光源和视觉显示信息的信息显示器的发光体也非常有用。