Synthesis and Characterization of Amorphous Inorganic Cluster Compounds

非晶态无机簇合物的合成与表征

• 批准号: 418805057
• 负责人: Professorin Dr. Stefanie Dehnen
• 金额: --
• 依托单位: Institut für Nanotechnologie (INT)
• 依托单位国家: 德国
• 项目类别: Research Units
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/418805057?language=en
• 关键词: Synthesis; Characterization; Amorphous; Inorganic; Cluster

Continuing and extending the work done in project A1 in the first funding period of FOR 2824, we investigate adamantane-like clusters of the [(RT)4E6] type (R = organic substituent; T = Si, Ge, Sn; E = S, Se, Te), which under certain circumstances exhibit extreme nonlinear optical properties in the form of a spectrally broad (white-light) emission. In cooperation with the PIs of the other projects within FOR 2824, these compounds are investigated experimentally and theoretically with respect to their nonlinear optical properties and with respect to their microscopic and macroscopic structures; here, the substances also serve as benchmark compounds for new experimental and theoretical methods to study amorphous materials in general. Among the major long-term goals of FOR 2824 are understanding the physical mechanism behind the new form of white light generation and the use of the materials in engineered devices. Based on the results obtained in the first funding period, we are therefore targeting in project A1 those substances that are particularly suitable for the formation of homogeneous, robust samples with the desired white-light emission properties as a result of their combination of R/T/E (or R/R', T/T', E/E'). We will develop synthetic routes to new compounds where R, T, and E can be uniform or diverse. We also propose – also in cooperation with project A2 – promising extensions of the compound library toward extended cluster cores, multifunctional substituents, and polymeric materials. In the case of crystalline materials, we will determine their structures. However, in terms of white-light generation, amorphous materials are the focus of the project. Therefore, the control of amorphousness is another important goal of the project A1 in the second funding period. We want to influence this specifically through glass formation, by exposure to external pressure, and by incorporation into scaffolds. The most promising compounds, as determined by our own pre-screening using a simple laser setup and simple DFT calculations, will be passed on to the theorists and physicists in FOR 2824, who will then perform more detailed studies on them in close cooperation with us and ultimately use the compounds for the fabrication of test devices.

继续并扩展在 FOR 2824 第一个资助期内项目 A1 中所做的工作，我们研究了 [(RT)4E6] 类型的金刚烷类簇（R = 有机取代基；T = Si、Ge、Sn；E = S 、Se、Te），在某些情况下以宽光谱（白光）发射的形式表现出极端的非线性光学特性，与 FOR 内其他项目的 PI 合作。 2824，对这些化合物的非线性光学特性以及微观和宏观结构进行了实验和理论研究；在这里，这些物质也可作为研究非晶材料的新实验和理论方法的基准化合物。 FOR 2824 的主要长期目标是了解新型白光产生背后的物理机制以及材料在工程设备中的使用，因此，根据第一个资助期获得的结果，我们将项目 A1 的目标定为这些。物质由于 R/T/E（或 R/R'、T/T'、E/E'）的组合，特别适合形成具有所需白光发射特性的均质、坚固的样品。我们将开发新化合物的合成路线，其中 R、T 和 E 可以是统一的或不同的。我们还与项目 A2 合作，提出有希望将化合物库扩展到扩展簇核、多功能取代基和聚合物材料。对于晶体材料来说，我们将确定它们的结构。但是，在白光产生方面，非晶材料是该项目的重点，因此，非晶性的控制是项目A1在第二期资助期间的另一个重要目标。特别是通过玻璃形成、暴露于外部压力以及掺入支架中，通过我们自己使用简单的激光装置和简单的 DFT 计算进行的预筛选确定的最有前途的化合物将被传递给理论家和物理学家。为了2824，然后他将与我们密切合作对它们进行更详细的研究，并最终使用这些化合物来制造测试设备。