Silicate Phosphors from Sol-Gel Prescursors

来自溶胶-凝胶前体的硅酸盐磷光体

• 批准号: 9900034
• 负责人: Michael Sailor
• 金额: $ 24万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-01 至 2003-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9900034&HistoricalAwards=false
• 关键词: Silicate; Phosphors; Sol; Gel; Prescursors

9900034SailorThis proposal is aimed at exploring the synthesis, chemistry and photophysics of a new class of silicate phosphor materials. The phosphors are unique in that no activator metals are needed to obtain efficient photoluminescence. Such materials may provide an alternative to existing phosphors that contain toxic heavy metal ions and as such pose a significant environmental hazard. The luminescent silicates that will be studied fall into two distinct classes depending on the alkoxysilane used in the synthesis. The first class are 'carboxysilicate' glasses that are stable at high temperatures. The second class are water-soluble 'aminosilicone' polymers that can be processed into a variety of shapes such as blocks, foams, and fibers. Both classes have high luminescence efficiency. These materials represent a new direction in silicon sol-gel chemistry and the aim of this proposal is to determine the structure, chemistry, and photophysics of the chromophore in these materials.%%%The discovery of efficient, environmentally benign phosphors for lighting, display, and specialty applications and the development of methods to synthesize polymeric silicones with interesting optical or electronic properties are of significant industrial interest as potential technologies.

9900034sailorthis提案旨在探索新型硅酸盐磷光材料的合成，化学和光体物理学。磷酸盐是独一无二的，因为不需要激活金属即可获得有效的光致发光。这样的材料可以为含有有毒重金属离子的现有磷酸盐提供替代方案，因此构成了严重的环境危害。将研究的发光硅酸盐属于两个不同的类别，这取决于合成中使用的烷氧基硅烷。头等舱是高温下稳定的“羧基化”眼镜。第二类是水溶性的“氨基硅酮”聚合物，可以将其加工成各种形状，例如块，泡沫和纤维。这两个类别具有高发光效率。这些材料代表了硅溶胶化学的新方向，该提案的目的是确定这些材料中发色团的结构，化学和化学物理学。%%％发现有效的照明，展示和特殊应用，特殊应用，并开发了与多种多样的构图的方法，这些方法具有重要的硅化性能。