双金属片
卟啉
薄膜
化学
非线性光学
制作
纳米技术
金属
外延
限制
连接器
金属有机骨架
化学工程
光电子学
图层(电子)
非线性系统
材料科学
物理化学
光化学
有机化学
替代医学
病理
计算机科学
工程类
操作系统
量子力学
吸附
医学
机械工程
物理
作者
D. Pu,Qing‐Yun Chen,Xiaoxiao Zheng,De‐Jing Li
标识
DOI:10.1021/acs.inorgchem.3c04030
摘要
Developing efficient metal–organic framework (MOF) optical devices with tunable third-order nonlinear optical (NLO) properties is an important challenge for scientific research and practical application. Herein, 2D monometallic and hetero/homo-bimetallic porphyrin MOF thin films (ZnTCPP(M) M = H2, Fe, Zn) were fabricated using the liquid-phase epitaxial (LPE) layer-by-layer (LBL) method to investigate the metal substitution dependent third-order NLO behavior. The prepared homo-bimetallic ZnTCPP(Zn) thin film exhibited enhanced third-order NLO performance with a higher third-order nonlinear susceptibility of ∼4.21 × 10–7 esu compared to monometallic and hetero-bimetallic counterparts. Additionally, theoretical calculations were performed to complement the experimental findings and revealed that the enhanced NLO effect of the ZnTCPP(Zn) thin film is mainly attributed to the enhanced local excitation. These findings not only provide a comprehensive understanding of the relationship between metal types and the NLO behavior of porphyrin MOF thin films but also offer valuable insights into the design and optimization of NLO devices.
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