Cs2CdV2O6Br2:一个中红外非线性光学瓦纳数据,包含d0/d10的过渡金属离子和离子
Lei Geng1, Baozhu Zhu1, Youzhao Lan2
1School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China.
Inorganic chemistry
|June 30, 2025
概括
一种新的瓦纳达氧化,Cs2CdV2O6Br2,显示了强大的非线性光学特性,用于中红外激光器. 这种材料提供了高损坏值和广泛的透明度,为先进的激光技术铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光学和光子学 在光学和光子学.
背景情况:
- 开发新的中红外非线性光学 (NLO) 晶体对于先进的激光技术至关重要.
- 基于氧化物的NLO材料非常受欢迎,但很难发现.
研究的目的:
- 设计和合成一种类似于弗雷斯诺石的新型氧化,Cs2CdV2O6Br2 (CCVB).
- 调查NLO属性和CCVB在中红外激光频率转换中的潜在应用.
主要方法:
- 结晶设计包含d0 V5+和d10 Cd2+的离子和离子.
- 新型化合物CCVB的合成和表征.
- 实验测量第二和生成 (SHG) 和激光诱导损伤值 (LIDT).
- 第一个原则计算来解释NLO属性.
主要成果:
- CCVB表现出强烈的SHG反应 (13.5×KDP在1064nm,1.2×AGS在2.1μm).
- CCVB具有超高的LIDT (75 × AGS在1064 nm).CCVB具有超高的LIDT (75 × AGS在1064 nm).CCVB具有超高的LIDT (75 × AGS在1064 nm).CCVB具有超高的LIDT (75 × AGS在1064 nm).CCVB具有超高的LIDT (75 × AGS在1064 nm).CCVB具有超高的LIDT.
- 在1064nm和2.1μm实现相位匹配,红外透明度高达10.4μm.
结论:
- CCVB是一种有前途的NLO材料,用于中红外应用.
- 该研究提出了设计基于的新型氧化物NLO晶体的可行策略.
- 在中红外激光频率转换方面,CCVB表现出卓越的性能.
相关概念视频
02:42Valence Bond Theory
9.7K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
9.7K
02:46Halogenation of Alkenes
16.5K
Halogenation is the addition of chlorine or bromine across the double bond in an alkene to yield a vicinal dihalide. The reaction occurs in the presence of inert and non-nucleophilic solvents, such as methylene chloride, chloroform, or carbon tetrachloride.
Consider the bromination of cyclopentene. Molecular bromine is polarized in the proximity of the π electrons of cyclopentene. An electrophilic bromine atom adds across the double bond, forming a cyclic bromonium ion intermediate.
Consider the bromination of cyclopentene. Molecular bromine is polarized in the proximity of the π electrons of cyclopentene. An electrophilic bromine atom adds across the double bond, forming a cyclic bromonium ion intermediate.
16.5K
03:02Colors and Magnetism
12.3K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
12.3K
02:58Crystal Field Theory - Octahedral Complexes
28.0K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
28.0K
01:20Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
2.0K
Arenediazonium substitution reactions occur when the diazonium group is substituted by various functional groups such as halides, hydroxyl, nitrile, etc. For instance, arenediazonium salts react with copper(I) salts of chloride, bromide, or cyanide to form corresponding aryl chlorides, bromides, and nitriles. These reactions are named Sandmeyer reactions. Although the mechanism of this reaction is complicated, as illustrated in Figure 1, they are believed to progress via an aryl copper...
2.0K
04:01VSEPR Theory and the Effect of Lone Pairs
44.1K
Effect of Lone Pairs of Electrons on Molecule Geometry
44.1K