在Agn@C18 (n = 4-6) 综合体中,电子转移介导的协同非线性光学响应:关于电子结构和光学特征的DFT研究
Muhammad Bilal Ahmed Siddique1, Jie Su1, Yanan Meng1
1School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|February 29, 2024
概括
新的银碳复合物 (Agn@C18) 显示了显著增强的非线性光学 (NLO) 特性. Ag6@C18复合体的超极化能力增加了130万倍,为先进的NLO材料铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 计算化学计算化学
- 量子化学 是一个量子化学.
背景情况:
- 开发高效和稳定的非线性光学 (NLO) 材料对于激光二极管和光伏的应用至关重要.
- 现有的NLO材料在效率和稳定性方面经常面临挑战.
研究的目的:
- 在理论上设计和研究新的银碳复合物 (Agn@C18) 以提高NLO特性.
- 探索多余电子和电荷转移对这些复合物的NLO反应的影响.
主要方法:
- 使用密度函数理论 (DFT) 和时间依赖的DFT (TD-DFT) 计算.
- 在材料设计中采用过剩电子和电荷转移策略.
- 研究的银团 (Agn,n=4-6) 吸附在一个循环[18]碳环 (C18) 上.
主要成果:
- 银集群的吸附显著增强了C18的超极化性.
- Ag6@C18复合体显示出 ~109496.2620 au 的第一个显著的超极化性,大约是纯C18的1.3 × 106倍.
- 与C18相比,Agn@C18复合体显示红移的UV-Vis吸收光谱 (385-731 nm) 与C18相比.
结论:
- 建议的过量电子和电荷转移策略有效地促进了NLO反应.
- Agn@C18复合体显示出开发高效的NLO设备的巨大潜力.
- 对稳定性,结合性和电荷转移特性的进一步调查证实了这些新型材料的可行性.
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