Akzonobel expands ningbo organic peroxide plant
Issuing time:2019-07-15 17:10
Japanese scientists have developed an organic luminous material that emits light for more than an hour, the British journal nature reported.Compared with the current luminous material production system, the materials described in this paper do not contain rare elements and do not need high manufacturing temperature.
Long afterglow luminescence (LPL) material is also known as luminous luminescence material, often used as luminous coatings, widely used in instruments, optoelectronic devices, emergency signs and other objects and defense military field.The principle is a photoluminescence system, which emits visible light when excited by a light source and stores some of the light energy. When the excitation stops, the energy can be slowly released as light.However, most commercial noctilucent coatings are based on inorganic systems. White carbon black not only needs rare elements for long-term luminescence, but also needs to be manufactured at a temperature above 1000 ℃.Until now, prolonged luminescence (phosphorescence) by organic molecules could only last a few minutes.
This time, scientists at kyushu university in Japan and their colleagues used two simple organic molecules at room temperature to make a material that emits light for more than an hour.The new material contains no rare elements and is easier to make than existing non-persistent luminescence systems.
The researchers believe that with further development, the system is expected to be flexible and color-adjustable.These properties, they say, could enable new long-afterglow materials to be used in textiles, Windows, paints and organic materials.