两个短波紫外线烯酸二烯石,由于功能组的排列,具有不同的光学特性
Yurui Wang1, Xuehua Dong2, Ling Huang2
1College of Chemistry, Sichuan University, Chengdu, Sichuan 610065, P. R. China.
Inorganic chemistry
|May 23, 2024
概括
合成了两个新的短波紫外线非线性光学晶体. 氧组的差异导致SeO3的不同方向,从而导致不同的光学特性和先进紫外线材料的潜力.
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.
- 光学是什么?光学是什么?
背景情况:
- 功能组的排列显著影响化合物特性.
- 非线性光学 (NLO) 材料对于光学应用至关重要.
- 特别感兴趣的是短波紫外线 (UV) NLO材料.
研究的目的:
- 为了合成和表征新的短波UVNLO晶体.
- 研究这些新化合物的结构-性质关系.
- 探索UV光学设备中的潜在应用.
主要方法:
- 合成KBe2 (SeO3) 2 (OH) ·H2O和K2Be (SeO3) 2晶体的过程.
- 用X射线衍射进行结构分析.
- 光学属性测量 (SHG效应,双折).
- 理论计算以了解光学行为.
主要成果:
- 两种新的短波紫外线NLO晶体,KBe2(SeO3)2(OH) ·H2O和K2Be(SeO3)2,已成功合成.
- 不同的氧组 (BeO3(OH) 与BeO4导致了不同的SeO3方向.
- KBe2(SeO3)2(OH) ·H2O表现出很大的SHG效应 (2xKDP) 和双断率 (0.078).
- K2Be(SeO3) 2显示出较小的SHG效应 (0.33倍KDP) 和双断率 (0.024).
结论:
- 对于观察到的光学特性来说,SeO3功能组的排列是至关重要的.
- 结构变化与NLO行为的差异直接相关.
- 这些发现为开发先进的短波紫外线光学材料提供了有希望的方向.
更多相关视频
12:08Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
Published on: July 18, 2015
10.7K
08:48Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment
Published on: November 9, 2015
8.3K
相关概念视频
01:14UV–Vis Spectrometers
1.3K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
1.3K
01:02Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
2.6K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material, molecules absorb light depending on the energy required for...
2.6K
01:30UV–Vis Spectrum
1.1K
When light passes through a substance, a portion of the light is absorbed while the remaining light is reflected or transmitted. If the molecule absorbs light between the wavelengths of 180–400 nm range, the UV spectrum is obtained, and if it absorbs light in the 400–780 nm wavelength range, the visible spectrum is obtained.
The UV–Vis spectrum of a molecule is the plot of its absorbance versus wavelength. The plot is drawn by taking molar...
The UV–Vis spectrum of a molecule is the plot of its absorbance versus wavelength. The plot is drawn by taking molar...
1.1K
01:16UV–Vis Spectroscopy: Molecular Electronic Transitions
1.4K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
1.4K