Two-Photon Structure/Property Relationships and Photochemistry

该奖项由亚利桑那大学化学系先进材料项目支持。Seth Marder教授和Joseph佩里教授的研究将解决具有双光子吸收的分子和分子系综的结构-性质关系和应用。该研究的目标是详细了解如何优化中心对称和非中心对称（偶极，四极，八极和十六极）分子的双光子吸收截面，并设计有效利用激发态的发色团，以有效地驱动化学反应，产生活性自由基和布朗斯台德或刘易斯酸和碱。该研究将增强材料的三维空间分辨图案化。通过光致电子或能量转移实现的过程将产生能够在微观上光聚合反应单体、光沉积金属和半导体以及光生催化剂的物质。高效的双光子引发剂允许对一系列材料进行图案化，将使三维微制造成为生产微光学器件、微机械部件和微流体电路的可行技术。这一跨学科研究的范围很广，包括合成，材料，理论，表征和制造。学生将接受化学、物理、材料和光学科学领域的培训。

This award to University of Arizona is supported by the Advanced Materials Program in the Chemistry Division.The research by Professors Seth Marder and Joseph Perry will address structure-property relationships and applications of molecules and molecular ensembles that exhibit two-photon absorption. The goals of the research are to develop a detailed understanding of how to optimize the two-photon absorption cross section in centrosymmetric and noncentrosymmetric (dipolar,quadrupolar, octupolar and hexadecapolar) molecules and to design chromophores that utilize effectively the excited states to efficiently drive chemical reactions that create reactive radicals and Bronsted or Lewis acids and bases. The research will enhance the three dimensional spatially resolved patterning of materials. Processes enabled by either photoinduced electron or energy transfer, will yield species that will microscopically photopolymerize reactive monomers, photodeposit metals and semiconductors,and photogenerate catalysts.Highly efficient two-photon initiators allowing the patterning of a range of materials,will make three dimensional microfabrication a viable technology for the production of micro-optics, micro-mechanical components and microfluidic circuits. The scope of this interdisciplinary research is broad, encompassing synthesis, materials, theory, characterization and fabrication. Students will be trained across the fields of chemistry, physics, materials and optical science.