在0D中H/F替代策略有机-无机混合金属化物设计铁弹性相变材料
Luan-Ying Ji1, Shu-Yi Liu1, Jun-Si Zhou1
1Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, P.R. China.
Inorganic chemistry
|February 9, 2026
概括
研究人员通过用来替代气,开发出新的零维 (0D) 有机-无机混合金属化物. 的加入显著提高了这些新型铁弹性材料的相变温度.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 三维 (3D) 基有机-无机混合双矿 (CHOIP) 呈现出有前途的多功能性质,如铁弹性和铁电性.
- 3D CHOIP中的局限性限制了有机的引入,阻碍了属性优化.
- 零维 (0D) CHOIPs提供了一条克服这些局限性的途径,但对0D铁弹性相变材料的研究仍然有限.
研究的目的:
- 为了合成和表征新的0D有机-无机混合金属化物材料.
- 研究H/F替代对这些材料相变性质的影响.
- 探索用于设计先进的OD铁弹性材料的结构性质关系.
主要方法:
- 使用H/F替代策略合成 (EA) 3[Fe(CN) 6和 (DFEA) 3[Fe(CN) 6.
- 结晶结构和相位过渡行为的表征.
- 对涉及有机离子排序和无机八面体旋转的相位过渡机制的分析.
主要成果:
- 成功合成了两个新的0D有机-无机混合金属化物: (EA) 3[Fe(CN) 6和 (DFEA) 3[Fe(CN) 6.
- 在 (DFEA) 3[Fe(CN) 6中,相转换是由有机离子的合顺序-乱序转换和[Fe(CN) 63-八面体的协调旋转驱动的.
- 与非化类似物相比,替代显著增加相位过渡温度.
结论:
- /替代策略对于开发具有可调节相位过渡特性的0D有机-无机混合金属化物是有效的.
- 化有机酸盐可以提高这些材料的热稳定性和相变温度.
- 这项研究为0D混合铁弹性材料的合理设计和性能优化提供了宝贵的见解.
相关概念视频
Phase Transitions
23.3K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
23.3K
Properties of Transition Metals
30.0K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
30.0K
Phase Transitions: Sublimation and Deposition
20.3K
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
20.3K
Phase Transitions: Melting and Freezing
15.3K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
15.3K
Phase Transitions: Vaporization and Condensation
21.5K
The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules...
21.5K
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
2.5K
Arenediazonium substitution reactions occur when the diazonium group is substituted by various functional groups such as halides, hydroxyl, nitrile, etc. For instance, arenediazonium salts react with copper(I) salts of chloride, bromide, or cyanide to form corresponding aryl chlorides, bromides, and nitriles. These reactions are named Sandmeyer reactions. Although the mechanism of this reaction is complicated, as illustrated in Figure 1, they are believed to progress via an aryl copper...
2.5K


