光发光的层层的兰坦化酸盐
Duarte Ananias1, Mariya Kostova, Filipe A Almeida Paz
1Contribution from the Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal.
Journal of the American Chemical Society
|August 19, 2004
概括
合成和表征了新的分层酸 (AV-22材料). 这些材料表现出可调节的光发光,具有在照明技术中作为光体的潜在应用.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学 有机化学
- 固态化学 固态化学
背景情况:
- 兰化酸盐是具有有趣光学特性的一类材料.
- 开发具有可调节排放的新型光器对于先进的照明应用至关重要.
研究的目的:
- 为了通过热水合成和结构性表征新型层状兰坦化酸盐,指定AV-22.2.
- 为了研究这些AV-22材料的光发光特性,这些材料添加了各种类离子.
主要方法:
- 单晶和粉末X射线衍射用于结构阐明.
- 化学分析,热重力测量,SEM, (29) Si MAS NMR 和光发光谱学用于表征.
- 水热合成技术. 水热合成技术.
主要成果:
- 成功合成了K(3) [M(1-a) Ln(a) Si(3) O(8) ((OH) ((2) ] (AV-22) 的材料.
- 埃尔-AV-22 作为室温红外的功能.
- Tb-和Eu-AV-22表现出可见的排放,效率与商业标准相比.
- 可调节的光发光,通过结合多个兰坦化离子来实现.
- 在混合兴奋剂材料中,有证据表明Tb(3+) -to-Eu(3+) 的能量转移.
结论:
- 层层的AV-22结构促进了多个兰坦化离子的结合,以微调发光.
- 这些材料对照明和显示技术的应用有前途.
- 在联合剂的AV-22材料中观察到高效的能量传递机制.
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