热和压力驱动的室温多态转换,伴随着可切换的SHG信号在一个新的Chiral六角矿中
Hui Ye1, Wang-Hua Hu1, Xiao-Xian Chen1
1MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510275, China.
Chemistry, an Asian journal
|August 8, 2023
概括
研究人员开发了一种稳定,可相互转换的性矿,具有明显的第二和代 (SHG) 信号. 这一突破利用同质基离子切换键,使先进材料应用可控制的相位过渡成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
- 非线性光学是非线性光学.
背景情况:
- 由于复杂的分子间相互作用,实现稳定,可相互转换的室温多态体具有挑战性.
- 具有独特光学特性的状材料对于先进的应用至关重要.
研究的目的:
- 设计和合成一种表现出稳定,可相互转换的室温多态的性矿.
- 为了研究阴离子结构,键和第二代 (SHG) 特性之间的关系.
主要方法:
- 合成一种性六角矿: (R-3-基-1-甲基) [CdCl3].
- 使用X射线衍射和光学测量进行室温晶体形式的表征.
- 研究由热和压力刺激引起的相变.
主要成果:
- 确定了两个不同的室温多态体,具有高的SHG切换对比度 (约18倍).
- 多态体通过热和压力驱动的过渡表现出长期稳定性和易于相互转换.
- 已经证明,同质基离子的集体重定向可以切换键,从而实现相位过渡.
结论:
- 同人体有机是诱导可切换键和控制无机链变形的关键.
- 不规则的有机离子可以导致多态体之间SHG信号的显著差异.
- 这项工作为设计可切换的非线性光学材料提供了途径.
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