作为非线性光学的电子捐赠组的五铁:中度响应性质和与相关的五胺二复合体的比较
Benjamin J Coe1, Josephine L Harries, Madeleine Helliwell
1School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK. b.coe@man.ac.uk
Journal of the American Chemical Society
|September 14, 2006
概括
本研究详细介绍了具有可调节非线性光学 (NLO) 特性的复杂铁盐. 溶剂和pH值的变化显著改变了它们的NLO反应,为可切换的光学材料提供了潜力.
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
- 摄影化学的使用.
背景情况:
- 富含电子的铁 (II) 化物中心与电子接受替代物协调到化连接体,形成复杂盐.
- 这些材料在可见光谱中表现出金属到质电荷转移 (MLCT) 波段.
研究的目的:
- 描述复杂盐的特征,并确定它们的分子方位非线性光学 (NLO) 反应.
- 研究溶剂和pH对NLO特性和MLCT转换的影响.
- 将铁 (II) 复合物的NLO特性与相关的 (II) 类似物进行比较.
主要方法:
- 电子吸收光谱学 电子吸收光谱学
- 循环电压计是循环电压计.
- 超雷利散射 (HRS) 是一种超雷利散射.
- 斯特拉克 (电吸收) 光谱法
- 时间依赖密度函数理论 (TD-DFT) 和有限场计算.
主要成果:
- 合成和特征复杂盐与{Fe(II) ((CN) ((5))) ((3))) 的中心和替代剂.
- 观察到显著的溶染色,NLO反应从水溶液增加到甲醇溶液.
- 水溶液的酸化可逆地切换了线性和NLO特性.
- 计算显示与实验数据有很好的一致性,证实了NLO对质子化反应的下降.
- 铁 (II) 复合物表现出更强的溶染色,导致甲醇中的NLO反应优于 (II) 类似物.
结论:
- 合成的铁 (II) 复合体显示可调节的NLO特性,受溶剂和pH的影响.
- 这些发现突出了开发基于金属有机复合物的可切换光学材料的潜力.
- 溶剂效应在调节这些系统的NLO性能方面发挥着至关重要的作用.
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