负载型金属-卟啉框架薄膜的外延组装及其三阶非线性光学性能

Since optical thin film materials have been widely used for the applications in optical limiting, optical communications, optical storage, optical conversion and other fields, how to design new third-order nonlinear optical thin films is still a challenge issue. This project is based on encapsulating functional guest species into metal-porphyrin frameworks thin film on varous sbustrate surfaces prepared by liquid-phase epitaxial growth method to form encapsulated metal-porphyrin framework thin films. Such encapsulated thin films have some advantages, such as controllable orientation and thickness, as well as high efficient encapsulation and homogeneous dispersion of guest species in the host framework thin film. Afterward, combining the synergistic effect among substrate surface, host framework and guest species, we focus on studying the third-order nonlinear optical property of encapsulated thin films and understanding the structure-properties relationship. Based on this study, we will make further efforts to optimize the preparation and the properties of encapsulated metal-porphyrin framework thin films, and then develop 2-3 kinds of encapsulated metal-porphyrin framework thin films with good third-order nonlinear optical property. This project provides an important theoretical basis and experimental guidance on developing new thin film materials on third-order nonlinear optical applications.

光学薄膜材料在光限幅、光通信、光存储和光转换等领域有着广泛的应用，然而如何设计新型三阶非线性光学薄膜材料依然是一个挑战性的难题。本项目拟在基底表面上将功能客体负载到液相外延生长的金属-卟啉框架薄膜中，形成负载型金属-卟啉框架薄膜材料。这类新颖的负载型薄膜材料具有可控的生长取向和可调节的薄膜厚度、功能客体负载率高以及均匀分布于主体框架薄膜中的优点。我们将结合基底表面、主体和客体协同效应，探索负载型金属-卟啉框架薄膜材料的三阶非线性光学性能，理解其构效关系；并在此基础上进一步优化薄膜材料的制备和性能，开发出2-3例具有优异三阶非线性光学性能的负载型金属-卟啉框架薄膜材料。该项目研究将为无机-有机杂化薄膜在三阶非线性光学领域的研究提供重要的理论和实践指导。

在国家自然基金委的支助下，本项目针对如何设计新型三阶非线性光学薄膜材料并讨论其光限幅应用，围绕着金属-卟啉框架薄膜材料的制备及其三阶非线性光学性能研究做了一系列工作。研究内容主要在基底表面将功能客体负载到液相外延生长的金属-卟啉框架薄膜中，形成负载型金属-卟啉框架薄膜材料。这类新颖的负载型薄膜材料具有可控的生长取向和可调节的薄膜厚度、功能客体负载率高以及均匀分布于主体框架薄膜中的优点。该项目结合基底表面、主体和客体协同效应，探索负载型金属-卟啉框架薄膜材料的三阶非线性光学性能，理解其构效关系；并在此基础上进一步优化薄膜材料的制备和性能，开发出几例具有优异三阶非线性光学性能的金属-卟啉框架薄膜材料。以本项目基金（批准号：21872148）在国际知名期刊Nat. Commun., J. Am. Chem. Soc.（2篇），Nano Lett., Appl. Catal. B: Environ., Adv. Funct. Mater., Adv. Sci., Chem. Sci. (2篇), Small, J. Mater. Chem. A , Chem. Eng. J., Adv. Optical Materials, Nano Res., Sci. China Chem., Sci. China Mater., ACS Appl. Mater. & Interfaces (4篇), J.Phys. Chem. Lett., Chem. Commun.等发表32篇SCI论文，其中项目负责人以通讯作者身份发表的论文有30篇，其中一区论文25篇，包括授权专利有4件。该项目研究将为无机-有机杂化薄膜在三阶非线性光学领域的研究提供重要的理论和实践指导。