期刊
DALTON TRANSACTIONS
卷 51, 期 27, 页码 10595-10600出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2dt01615j
关键词
-
资金
- JSPS KAKENHI [JP22H00311, JP21K14691]
- JSPS Joint Research Projects under the Bilateral Programs, Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials
- Research Program of Network Joint Research Center for Materials and Devices: Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT)
- Murata Science Foundation
- Iketani Science and Technology Foundation
- Harmonic Ito Foundation
- Ministry of Education, Culture, Sports, Science, and Technology through the Program for Leading Graduate Schools (Hokkaido University Ambitious Leaders' Program)
The study found that [MnCr(oxalate)(3)](-) crystal possesses a ferromagnetic network and its crystal-to-crystal transformation provides a strategy for designing multifunctional materials where additional functions arise from molecular dynamics.
[MnCr(oxalate)(3)](-) possesses a two-dimensional ferromagnetic network that is an ideal system for the construction of multifunctional molecular materials based on ferromagnetism. This is because additional functions, such as ferroelectricity, can be hybridised by incorporating functional cations between the layers. However, the majority of [MnCr(oxalate)(3)](-) networks readily incorporate solvent molecules upon crystallisation, and it is sometimes difficult to measure the crystal physical properties because of the collapse associated with desolvation. Upon desolvation, the polar crystal (CBA(+))([18]crown-6)[MnCr(oxalate)(3)](-)(CH3OH) (1 center dot CH3OH) (CBA(+) = 4-carboxybutan-1-aminium) underwent a crystal-to-crystal transformation to form (CBA(+))([18]crown-6)[MnCr(oxalate)(3)](-), 1. Furthermore, this change was accompanied by hydrogen bond reorganisation in the (CBA(+))([18]crown-6) supramolecular assembly. Both crystals exhibited ferromagnetic ordering at approximately 5 K. In crystal 1, a merry-go-round motion of [18]crown-6 was observed, with an activation energy of 41.41 kJ mol(-1), which resulted in dielectric relaxation. This crystal-to-crystal structural transformation provides a strategy for designing multifunctional hybrid materials, in which an additional function arises from molecular motion.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据