在 (Si,P) - O,N) 网络中的基本失序单元
Marwin Dialer1, Kristian Witthaut1, Thomas Bräuniger1
1Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377, Munich, Germany.
Angewandte Chemie (International ed. in English)
|February 10, 2024
概括
这项研究引入了在极端条件下合成的新型氧化酸酸盐. 这些新材料具有独特的结构特征和可调节的光学特性,为先进的绝缘体研究铺平了道路.
科学领域:
- 固态化学 固态化学
- 材料科学是一种材料科学.
- 无机化学 无机化学 无机化学
背景情况:
- 氧化酸酸盐是无机化合物的一类,在材料科学中具有潜在的应用.
- 了解它们的合成和结构性质对于开发新的功能材料至关重要.
研究的目的:
- 为了合成和描述新型的氧化酸酸盐.
- 为了研究它们的结构特征,粘合模式和光学特性.
- 探索它们在绝缘体中发光和频段间隙调节方面的潜力.
主要方法:
- 高温和高压合成. 高温和高压合成.
- 单晶X射线衍射 (SCXRD) 方法.
- 元素分析和31P核磁共振 (NMR) 光谱学.
- 低成本的结晶学计算 (LCC).
- 光发光激发 (PLE) 和光发光 (PL) 的测量.
- 密度函数理论 (DFT) 的计算.
主要成果:
- 成功合成了三种新的氧化酸酸盐:Sr3SiP3O2N7,Sr5Si2P4ON12和Sr16Si9P9O7N33.3.
- 一个共同的基本构造单元的识别:一个由 (Si,P) 组成的vierer单一链 (O,N) 4四面体,具有替代失调 (基本失调单元 - FDU).
- 四个FDU图案的分类,其中三个在合成化合物中发现.
- 研究Eu2+兴奋剂化合物的光学特性,包括发光,并讨论热火机制.
结论:
- 这项研究建立了一种具有独特结构特征的新一类氧化酸酸盐.
- 系统的结构特征和可调节的光学特性为光和带隙工程的理论研究和应用提供了巨大的潜力.
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