在Halopnictides中的结构对称性和混合离子工程,用于非凡的第二和生成
Yi-Bing Huang1,2, Bin-Wen Liu1,3, Wen-Lin Wu1
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research of the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China.
Angewandte Chemie (International ed. in English)
|December 18, 2025
概括
开发新的非线性光学 (NLO) 材料具有挑战性. 这项研究通过调整对称性和离子来设计具有增强的第二和生成 (SHG) 的宿主-客户端halopnictides,显示了NLO应用的前景.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 非线性光学是非线性光学.
背景情况:
- 在NLO材料中实现高非线性光学 (NLO) 系数是一个重大挑战.
- 现有的NLO材料通常在性能和适用性方面面临限制.
- 开发具有优越性质的新型NLO材料对于先进的光学技术至关重要.
研究的目的:
- 为了设计具有增强非线性光学特性的新型宿主-客体.
- 研究结构对称性和混合离子工程对NLO系数的影响.
- 探索这些新材料在实际NLO应用中的潜力.
主要方法:
- 基于 [Cd4P2] 灵活的宿主孔隙框架的宿主-客体皮菌的合成.
- 使用结构对称性和混合离子工程策略.
- 嵌入不同的四面体单位作为客物种来指导结构.
- 晶体结构的表征,第二生成 (SHG) 响应,激光诱导损伤值 (LIDT) 和红外传输率.
主要成果:
- 成功合成了五种新的宿主-客人基:[Cd4P2][ZnCl4],[Cd4P2][MnCl4],[Cd4P2][ZnBr4],[Cd4P2][Mn0.6Cd0.4Br4],以及[Cd4P2][ZnCl3I].
- 通过调整宿主框架孔隙性和通过混合离子调制构建可极化多面体,可以实现显著增强的SHG反应,达到AgGaS2 (在1700nm) 的6.6倍.
- 获得了[Cd4P2][ZnBr4]的毫米大小的单晶,显示出强烈的SHG反应 (2.5 × AgGaS2),高LIDT (3.0 × AgGaS2在1064 nm) 和宽红外传导率 (2.5-14.9 μm).
结论:
- 结构对称性和混合离子工程的联合策略在开发高性能NLO材料方面是有效的.
- [Cd4P2][ZnBr4]由于其优异的SHG,LIDT和IR透明度,显示出作为一个有前途的NLO材料的巨大潜力.
- 这项工作为先进的NLO材料的合理设计提供了宝贵的见解和新的途径.
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