具有可调节非线性光学活动的可光开关分子单元:理论调查
Aggelos Avramopoulos1, Heribert Reis2, Demeter Tzeli3,4
1Department of Physics, University of Thessaly, 35100 Lamia, Greece.
Molecules (Basel, Switzerland)
|August 12, 2023
概括
滴乙烯衍生物 (DTE) 的分子非线性光学特性由光控制. 双乙烯-1,2-二甲基酸 (NiBDT) 连接器在光学特性方面提供了较大的对比性,与纳夫他林相比.
科学领域:
- 分子光子学 分子光子学
- 计算化学计算化学
- 材料科学 材料科学 材料科学
背景情况:
- 狄氏乙烯 (DTE) 分子表现出光色,在暴露于光线时改变性质.
- 分子非线性光学 (NLO) 特性对于先进的光学应用至关重要.
- 通过分子设计调整NLO特性是一个活跃的研究领域.
研究的目的:
- 研究DTE衍生品的第一,第二和第三级NLO属性.
- 分析不同分子链接剂 (NiBDT,纳夫他林,寡烯) 对NLO反应的影响.
- 探索光色素在控制NLO特性中的作用.
主要方法:
- 使用密度函数理论 (DFT) 的计算.
- 计算了第一,第二和第三阶段的超极化性.
- 使用弗斯特转移机制研究了分子内兴奋状态能量转移 (EET).
主要成果:
- 通过DTE开关和光频率有效控制NLO属性.
- 与纳夫他林相比,NiBDT链接器显示了开放和封闭的DTE异构体之间的超极化度的较大对比.
- 第二个超极化性作为光色诱导的结构变化的索引.
- 电子合 (VDA) 对分子几何和链接器选择敏感.
- 链接器显著影响DTE单元之间的通信.
结论:
- 分子连接器在调节DTE系统的NLO特性方面发挥着至关重要的作用.
- NiBDT链接器增强了对NLO反应的光色控制.
- DFT计算为光响应材料提供了对结构属性关系的见解.
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