Silicate Phosphors from Sol-Gel Prescursors

9900034 sailor本提案旨在探索一类新型硅酸盐荧光粉材料的合成、化学和光物理。该荧光粉的独特之处在于不需要激活金属来获得有效的光致发光。这种材料可以替代含有有毒重金属离子并对环境造成重大危害的现有荧光粉。根据合成中使用的烷氧基硅烷的不同，将研究的发光硅酸盐分为两类。第一类是在高温下稳定的“羧酸硅酸盐”玻璃。第二类是水溶性“氨基硅酮”聚合物，可以加工成各种形状，如块状、泡沫状和纤维状。这两类都有很高的发光效率。这些材料代表了硅溶胶-凝胶化学的一个新方向，本提案的目的是确定这些材料中的发色团的结构，化学和光物理。用于照明、显示和特殊应用的高效、环保荧光粉的发现，以及合成具有有趣的光学或电子特性的聚合有机硅的方法的发展，作为潜在的技术具有重要的工业兴趣。

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.