New Polymeric Materials for Nonlinear Optical Applications

用于非线性光学应用的新型聚合物材料

• 批准号: 9107806
• 负责人: Larry Dalton
• 金额: $ 31.2万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9107806&HistoricalAwards=false
• 关键词: New; Polymeric; Materials; Nonlinear; Optical

New nonlinear spectroscopic techniques (interferometric and multi- color degenerate four wave mixing), together with femto and pico second conventional nonlinear and electro-optic modulation measurements, with be used to define mechanisms of optical nonlinearity in newly synthesized metal free and metallated ladder copolymers, metallated macrocyclic polymers, thienylpolyene copolymers, mixed valence molecules (in solution) and polymers, the photosynthetic reaction center and related model compounds, and in fullerenes. Copolymer synthesis techniques are used to overcome intrinsically poor solubility of ladder, macrocyclic, and thienylpolyene materials, to retard photochemical degradation of mixed valence and thienylpolyene materials, to control intermolecular interactions and to permit measurement of materials under comparable local field conditions. Treatment of electronic and nuclear dynamics as well as the details of the applied electromagnetic fields by density matrix methods permits characterization of multiple mechanisms of optical nonlinearity in a single material. Preliminary realization of large optical nonlinearities suggest that, with further optimization of material properties device application of organic, inorganic and mixed valence polymers, may be practical. This research on nonlinear optical materials combines synthesis, state-of-the-art characterization and measurements, and study of the mechanisms of optical nonlinearity. The grant is supported jointly by the Polymers and the Solid State Chemistry components of the Solid State Chemistry and Polymers Program.

新的非线性光谱技术（干涉和多色简并四波混合），连同飞秒和皮秒传统非线性和电光调制测量，可用于定义新合成的无金属和金属化梯形共聚物、金属化大环聚合物、噻吩基多烯共聚物、混合价态中的光学非线性机制 分子（在溶液中）和聚合物、光合作用反应中心和相关模型化合物以及富勒烯。 共聚物合成技术用于克服梯、大环和噻吩基多烯材料固有的溶解度差的问题，以延迟混合价和噻吩基多烯材料的光化学降解，控制分子间相互作用并允许在可比的局部场条件下测量材料。 通过密度矩阵方法处理电子和核动力学以及所应用电磁场的细节，可以表征单一材料中光学非线性的多种机制。 大光学非线性的初步实现表明，随着材料性能的进一步优化，有机、无机和混合价聚合物的器件应用可能是实用的。 这项非线性光学材料的研究结合了合成、最先进的表征和测量以及光学非线性机制的研究。 该赠款由固态化学和聚合物项目的聚合物和固态化学部分共同支持。