Novel photoactive transition metal catalysts for the UV-Light-Triggered Metathesis Polymerization of Functional Monomers

用于紫外光触发功能单体复分解聚合的新型光活性过渡金属催化剂

• 批准号: 25106151
• 负责人: Professor Dr. Michael R. Buchmeiser
• 金额: --
• 依托单位: Lehrstuhl für Makromolekulare Stoffe und Faserchemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/25106151?language=en
• 关键词: Novel; photoactive; transition; metal; catalysts

This project aims on the synthesis of novel ruthenium-based metal complexes that shall serve as photo-active precursors for metathesis catalysts. These organometallic compounds shall be based on Ru-N-heterocyclic carbenes with additional ligands that can be selectively removed upon irradiation with UV-light (¿ < 300 nm). Important enough and in contrast to (few) existing systems, these precursor compounds shall be stable at temperatures up to 45°C and to irradiation with visible light (¿ > 300 nm). Complexes activated by light with ¿ < 300 nm shall be exposed to strained olefins such as functional norborn-2-enes and cyclooctenes to form ring-opening metathesis polymerization (ROMP) active catalysts. Complementary, the activated complexes shall be reacted with various functional 1,6-heptadiynes to form cyclopolymerization active species to gain access to semiconducting and conducting species. Investigations on the mechanism of activation as well as kinetic measurements shall be carried out. Finally, the novel systems shall be used to create x/y-resolved surface-immobilized polymer brushes as well as x/y-resolved surface-bound (semi-) conducting polymers layers and wires. These shall be used for the realization of bioanalytic devices, e.g. for DNA analysis. Conductive layers shall be used for the construction of (semi-) conducting polymer layers.

该项目的目的是合成新型的基于松金属的金属络合物，该复合物应作为元理解催化剂的光活性前体。这些有机化合物应基于Ru-N-近地循环碳，并具有其他配体，可以在用紫外线照射后选择性去除（€<300 nm）。与（几个）现有系统相反，这些前体化合物应在高达45°C的温度下稳定，并用可见光（> 300 nm）辐射。通过光激活的复合物应暴露于应变的烯烃，例如功能性的诺伯-2-酮和环环烯，以形成开环的分解聚合聚合（ROMP）活性催化剂。互补的活性复合物应与各种功能性的1,6- heptadiynes反应，以形成环聚合活性物种，以获取半导体和导电物种。应对激活机理以及动力学测量进行研究。最后，新型系统可用于创建X/Y分辨的表面弹性聚合物刷以及X/Y分辨的表面结合（半）导电聚合物层和电线。这些用于实现生物分析设备，例如用于DNA分析。导电层应用于（半）导电聚合物层的构建。