KTiOPO4-Like深紫外线透明材料的异构设计,表现出强的第二波生成
Chunbo Jiang1, Xingxing Jiang2, Chao Wu1
1China-Australia Joint Research Center for Functional Molecular Materials, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China.
Journal of the American Chemical Society
|October 19, 2022
概括
研究人员开发了新的深紫外 (UV) 透明非线性光学 (NLO) 晶体,ZOF和HOF. 这些材料具有强烈的第二生成 (SHG) 和短的紫外线吸收边缘,促进了NLO应用.
科学领域:
- 材料科学
- 固态化学
- 非线性光学
背景情况:
- 对于非线性光学来说,第二和生成 (SHG) 是至关重要的,但在深紫外线区域具有挑战性.
- 由于相互竞争的微观结构要求,现有的材料往往面临限制.
研究的目的:
- 报告新的基于过渡金属的非线性光学 (NLO) 晶体,具有深紫外线透明度.
- 探索深紫外线NLO材料设计的新功能单位.
主要方法:
- 采用异构节点替换策略,从KTiOPO4 (KTP) 结构演变.
- 合成和特征Zr-based (ZOF) 和Hf-based (HOF) 晶体,其中包括MO2和F6部分.
主要成果:
- 在ZOF和HOF下实现了前所未有的短紫外线吸收边缘.
- 观察到强度相匹配的SHG反应 (ZOF的KDP为2.2倍,HOF的KDP为1.8倍).
- 证明d0-[MO2F6]多面体可以防止d-d电子过渡,从而实现广泛的紫外线透明度.
结论:
- 介绍了基于d0TM的[MO2F6]多面体作为深紫外NLO材料的有效功能单位.
- 验证了开发先进的功能性NLO材料的异构设计策略.
- 铺平了新的深紫外线透明NLO材料的道路,
相关概念视频
Photoluminescence: Applications
472
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
472
Total Internal Reflection Fluorescence Microscopy
5.9K
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
5.9K


