POSS基无机杂化激光防护功能材料的分子设计与控制制备

项目名称： POSS基无机杂化激光防护功能材料的分子设计与控制制备

项目编号： No.21271040

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 徐洪耀

作者单位： 东华大学

项目金额： 80万元

中文摘要： 项目在前期激光防护材料研究的基础上，结合课题组无机杂化发光以及低介电杂化材料制备初步研究成功经验，采用纳米大小笼形倍半硅氧烷（POSS,Si8O12R8）作为构筑基元，基于分子组装和纳米增强效应，进行纳米尺度新型宽波段激光防护无机杂化功能材料的分子设计与构筑，采用高效可控点击化学合成法，实现宽波段激光防护无机杂化材料的控制制备；使用密度泛函理论B3LYP/6-31G方法，对杂化分子的结构以及分子堆积与排列行为进行理论模拟，结合光学性能的实验测试结果，深入研究杂化材料中纳米增强效应与机理；通过时间分辨泵浦探测技术，以及纳秒和皮秒激光脉冲测试系统、Z-扫描测试技术，测试无机杂化分子的激光防护性能，并研究材料激光防护机理，系统探讨杂化功能材料中分子组成、结构对材料性能的影响与规律，为宽波段激光防护无机杂化新材料设计与应用奠定基础。

中文关键词： 多面体倍半硅氧烷；分子杂化材料；非线性光学；光限幅；纳米复合材料

英文摘要： Basen on the research foundation of laser protection materials for more than twenty years and successful experience for preparation of inorganic hybrid luminesence materials and inganic hybrid low dielectric materials,the molecular design and architecture are made using nano-sized inorganic particles,polyhedral oligomeric silsesquoixane (POSS, Si8O12R8) with a well-defined nano-sized cubeoctameric structure as a building unit. The contronllable preparation of inoganic hybrid functional materials for broad laser protection will be deeply studied by highly efficient, and sensitive "Click Chemistry" method. The enhancement effect and mechanism of POSS nanoparticles on optical properties will be carefully explored by theoretical simulation of molecular geometrical character and arrangement conducted under the Gaussian 03 software suite with B3LYP/6-31G level of theory combining with experimental results of optical properties.The laser protection properties and mechanism of hybrid functional materials will be investigated by time-resolved pump-probe technology and z-scan measurement system with ns and ps ulse width. The retionship between molecular component, molecular structure and optical properties will be summaried. The work of the project will provide a fundation for the design and application of new laser prot

英文关键词： polyhedral silsesquioxane；molecular hybrid Materials；nonlinear optics；optical limiting；nanocomplex