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阿克苏诺贝尔扩建宁波有机过氧化物
凯茵化工讯 英国《自然》杂志近日发表研究报告称,日本科学家研发了一种能够发光超过一个小时的有机夜光材料。与现行的夜光材料生产系统相比,文章中介绍的材料不含稀有元素,且不需要很高的制造温度。
长余辉发光(LPL)材料又被称为蓄光型发光材料,常被用作夜光涂料,广泛应用在仪表、光电子器件、紧急标志等物件以及国防军事领域上。它的原理是一种光致发光系统,在光源激发下发出可见光,并将获得的部分光能储存起来,当激发停止后,能以光的形式将能量缓慢释放出来。但是,大部分商业性夜光涂料以无机系统为基础,白碳黑不仅需要稀有元素才能长效发光,而且制造温度需要达到1000摄氏度以上。直到现在,通过有机分子延长发光(磷光),也只能使发光时间持续几分钟。
此次,日本九州大学科学家安达千波矢及其同事,使用两种简单的有机分子在室温下制成了有机长余辉发光材料,其发光时间超过一个小时。与目前的无机长余辉发光系统相比,新材料不含稀有元素,也更容易制造。
研究人员认为,经过进一步的开发,该系统有望做到柔性和颜色可调。他们表示,这些特性能够使好新问世的长余辉发光材料广泛应用于纺织、窗户、涂料和有机物的成像上。
New organic luminous materials glow for more than an hour
Kailin Chemical News British "Nature" magazine recently published a research report said that Japanese scientists have developed a can shine more than one hour of organic luminous materials. Compared with the current luminous material production system, the material described in the article is free from rare elements and does not require high manufacturing temperature.
Long Afterglow Luminescence (LPL), also known as luminescent luminescent materials, is often used as a luminous paint and is widely used in the fields of instruments, optoelectronic devices, emergency signs and other military fields. Its principle is a photoluminescence system that emits visible light when excited by a light source and stores some of the light energy it has gained. When the excitation is stopped, energy is slowly released in the form of light. However, most commercial luminescent coatings, based on inorganic systems, require not only rare elements for long-lasting luminescence, but also their manufacturing temperature to be above 1000 degrees Celsius. Up to now, the extension of luminescence (phosphorescence) by organic molecules has only allowed the luminescence to last for a few minutes.
At this time, Japan-based Kyushu University scientist Anda Michio and his colleagues used two simple organic molecules to make organic long-lasting luminescent materials at room temperature for more than an hour. Compared with the current inorganic afterglow luminescence system, the new material does not contain rare elements, but also easier to manufacture.
Researchers believe that after further development, the system is expected to be flexible and color-adjustable. They said these features enable the widely-used imaging of long-lasting, luminescent materials in textiles, windows, coatings and organic materials.
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