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具有增强的非线性光学特性和双断裂性的深紫外透明混合金属硫酸盐

Xuefei Wang¹, Xudong Leng², Yunseung Kuk¹

¹Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea.

Angewandte Chemie (International ed. in English)

|November 16, 2023

概括

研究人员合成了新的混合金属-土金属硫酸盐材料,以增强非线性光学 (NLO) 性能. 化合物1具有很大的二极极矩和优异的第二波生成,推进了NLO材料的开发.

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:

对离子组的可控排列对于提高非π结合的NLO材料的异构性和非线性光学 (NLO) 性能至关重要.
现有的NLO材料通常需要特定的结构图案来实现所需的光学特性.

研究的目的:

合成和表征新型混合金属-土金属硫酸盐材料.
为了研究阴离子协同作用,阴离子排列和NLO特性之间的关系.
探索开发高性能非π结合NLO材料的新途径.

主要方法:

混合金属-土金属硫酸盐化合物的合成.
结晶学分析以确定结构安排.
光学属性测量,包括UV-Vis切线,第二波生成 (SHG) 和双折.

主要成果:

成功合成了三种新的硫酸盐化合物:Cs2Mg(NH2SO3) 4·4H2O (1),K2Ca(NH2SO3) 4 (2),和Rb2Ca(NH2SO3) 4 (3).
化合物1表现出180nm以下的深紫外线切线和由于Cs+和Mg2+的协同作用而形成的独特的并行离子排列.
化合物1显示显著大的二极极矩,导致SHG响应是KH2PO4的2.3倍,双折率为0.054.

结论:

使用异构的离子组的受控排列是开发先进NLO材料的有效策略.
合成的硫酸盐材料,特别是化合物1,在非线性光学中显示出有前途的应用潜力.
这项工作为探索具有定制性质的非π结合NLO材料开辟了新的可能性.

关键词:

深紫外线深紫外线双极时刻双极时刻双极时刻混合的阴离子混合的阴离子非线性光学材料非线性光学材料硫酸盐硫酸盐的使用方法

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