Radical/anionic SRN1-Type Polymerization for Preparation of Polyarenes

该项目涉及开发一种新的聚合方法来制备聚芳烃。该方法不需要任何过渡金属，并允许形成低聚芳烃，这是一种在材料科学中具有重要意义的化合物。作为单体的构建单元，芳基格氏试剂带有阴离子离去基团将被使用。反应通过强烈的自由基/阴离子交替过程进行。目前还没有研究这种自由基/阴离子交替聚合。所提出的聚合过程属于链式生长聚合。在提案中提出了各种低温引发工艺。此外，还将在新型srn1聚合中制备和测试各种单体。将通过凝胶渗透色谱、核磁共振谱、质谱等方法对聚芳烃进行分析，并对新材料的光物理性质进行研究。另一个重要的点是允许端群控制的过程的发展。沿着这条路线，方法和端盖试剂将被开发出来。

The project deals with the development of a novel polymerization method for preparation of polyarenes. The method does not need any transition metals and allows for formation of oligoarenes, a compound class which has found importance in materials science. As monomer building blocks aryl Grignard reagents bearing an anionic leaving group will be used. Reactions proceed via a strongly alternating radical/anionic process. Such alternating radical/anionic polymerizations are currently not explored. The presented polymerization process belongs to the class of chain growth polymerizations. In the proposal various low temperature initiation processes are suggested. In addition, various monomers will be prepared and tested in the novel SRN1-polymerization. Analysis of the polyarenes will be conducted by gel permeation chromatography, NMR spectroscopy, mass spectrometry and the photophysical properties of the novel materials will be investigated. An additional important point is the development of processes which allow for end group control. Along this line methods and end capping reagents will be developed.