ERA-Chemistry: Photo-Triggered End-Group Conversion of Synthetic Polymers Prepared via Light-Induced Initiation Pathways

ERA-Chemistry：通过光诱导引发途径制备的合成聚合物的光触发端基转化

• 批准号: 251443177
• 负责人: Professor Dr. Christopher Barner-Kowollik
• 金额: --
• 依托单位: Institut für Physikalische und Theoretische Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/251443177?language=en
• 关键词: ERA; Chemistry; Photo; Triggered; End

In the proposed project, an Austrian (Graz University of Technology) and a German group (Karlsruhe Institute of Technology, KIT), with a complementary set of skills, join forces for the in-depth study of photolytically triggered radical transformation pathways of synthetic polymers generated via photoinitiation processes. The aim of the project is to arrive at an encompassing mechanistic understanding of the underpinning reactions that occur when well-defined photolytically generated synthetic polymers are subjected to secondary irradiation processes. Data on such processes is very scarce, yet of paramount importance to (i) judge the propensity of photo-generated polymers to change their end-group characteristics upon post-irradiation or during the primary irradiation process, which can significantly affect their performance and (ii) to exploit UV-triggered end-group transformations for the post-modification of photolytically generated polymers. To obtain the required underpinning mechanistic data, well-defined polymers generated via pulsed laser induced polymerization process will be prepared and subjected to a combination of analytical on-line (in-situ UV-irradiation analysis) and off-line (post UV-irradiation analysis) methodologies, including size exclusion chromatography coupled to mass spectrometry (SEC/ESI-MS), chemically-induced dynamic nuclear polarization (CIDNP) NMR as well as electron paramagnetic resonance (EPR) spectroscopy. The result of the project will be a first-time thorough understanding of the radical end-group transformation pathways for a series of photoinitiator/monomer systems and the establishment of guiding principles that dictate these processes as a function of the photolytically introduced end-groups as well as the type of employed monomer.

在拟议的项目中，奥地利（Graz技术大学）和一个德国集团（Karlsruhe Technology，套件）具有互补的技能，与通过光启动过程生成的合成聚合物的光解触发的激进转化途径进行了深入研究。该项目的目的是使对良好定义的光解产生的合成聚合物进行次级辐照过程的基础反应具有包含的机械理解。有关此类过程的数据非常稀缺，但对于（i）判断照片生成的聚合物的倾向至关重要。 To obtain the required underpinning mechanistic data, well-defined polymers generated via pulsed laser induced polymerization process will be prepared and subjected to a combination of analytical on-line (in-situ UV-irradiation analysis) and off-line (post UV-irradiation analysis) methodologies, including size exclusion chromatography coupled to mass spectrometry (SEC/ESI-MS), chemically-induced dynamic nuclear极化（CIDNP）NMR以及电子顺磁共振（EPR）光谱。该项目的结果将是对一系列光引发剂/单体系统的激进终端转化途径的首次彻底理解，以及建立指导原理，这些原理将这些过程决定这些过程是光解引入的端组以及使用的单体类型的函数。