可逆热色和稳定电阻的切换行为基于一个Co (III) -复合链接的多氧酸盐
Yong-Jiang Wang1, Nian Shi1, Cai Sun1
1College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China.
Inorganic chemistry
|June 29, 2023
概括
一个新的3D混合多氧酸盐框架显示可逆热色和非挥发性电阻开关内存. 这种金属有机材料展示了先进电子应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 纳米技术 纳米技术
背景情况:
- 聚氧基酸盐是具有可调节性质的多功能无机集群.
- 混合材料结合有机配体和无机框架提供独特的功能.
- 目前正在开发用于电子记忆和传感应用的新材料.
研究的目的:
- 为了构建一个新的3D金属复合物修饰混合多氧酸盐框架.
- 调查热色特性和潜在的机制.
- 探索非挥发性电阻切换内存应用的潜力.
主要方法:
- 3D框架的热水合成 Na10(H2O)36[Co2(phen)2(4,4'-双眼)(Nb6O19)2]·19H2O (1).
- 框架结构和协调环境的特征.
- 通过UV-Vis光谱和分析电子转移来研究热色表现.
- 电气测量以评估电阻开关特性,包括电压电流特性和循环稳定性.
主要成果:
- 成功合成了一种3D混合框架,其中包括与多氧酸盐单元,4,4'-二二和类素协调的Co(III) 中心.
- 化合物1表现出可逆的热色变异,归因于从{Nb6O19}到4,4'-双眼的分子内部电子转移.
- 该材料表现出稳定的非挥发性电阻开关,具有低开关电压 (1.12 V) 和高开/关比 (1.18 × 10 3),在200个周期内保持性能.
结论:
- 构建的3D混合多氧酸盐框架代表了一种新的功能材料类.
- 观察到的热色行为是多氧酸盐化学中的新奇现象.
- 该材料在可重写非易失性存储器设备中的应用具有显著的前景,因为它具有出色的电开关特性.
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