从硫酸盐A3Ta2AsS11 (A = K和Rb) 中产生强烈的第二波
Tarun K Bera1, Joon I Jang, John B Ketterson
1Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA.
Journal of the American Chemical Society
|December 19, 2008
概括
新的硫酸盐,A(3) Ta(2) AsS(11),表现出强大的非线性光学特性. 它们的结构受金属大小的影响,产生了高达15倍的第二生成 (SHG) 响应,比AgGaSe大(2).
科学领域:
- 无机化学 无机化学 有机化学
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
背景情况:
- 具有强烈的异构性质的thioarsenates对先进的光学应用有兴趣.
- 在聚硫化物流中稳定新型化合物提供了一条探索新材料特性的途径.
研究的目的:
- 为了合成和描述配方A(3) Ta(2) AsS(11) 的新型硫酸盐.
- 研究金属尺寸对晶体结构和包装的影响.
- 评估非线性光学 (NLO) 属性,特别是第二波生成 (SHG).
主要方法:
- 使用聚硫化物流量的A(3) Ta(2) AsS(11) 化合物的结晶.
- 进行X射线衍射分析以确定晶体结构和链包装.
- 光学测量量第二波生成 (SHG) 响应的量化.
主要成果:
- 所有合成的化合物都具有平行聚合物离子链, (1) / ((无限) [Ta ((2) AsS ((11) ((3-)) ].
- 金属离子体大小决定了链包装:K(+) 和Rb(+) 喜欢非中心对称的包装,而Cs(+) 喜欢中心对称的包装.
- 硫酸盐表现出强烈的非线性光学 (NLO) 第二波生成 (SHG) 反应,多晶样品显示SHG比AgGaSe强大约15倍.
结论:
- 金属的尺寸在确定这些异型硫酸盐的晶体结构和包装方面起着至关重要的作用.
- 研究的化合物显示出NLO应用的巨大潜力,因为它们具有非常强的SHG反应.
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