We demonstrate the use of bis(pinacolato)diboron to directly polymerize symmetric, bisbromo, thiophene-based monomers via a Suzuki homo-polymerization to form co-polymers in less steps than the corresponding co-polymerization. We compare this method to the commonly used Stille co-polymerization by preparing four thiophene-based co-polymers using both methods. We use MALDI-TOF mass spectrometry to show that this new method produces high-quality, uniform polymers with narrow distributions of end-groups. By varying the electronegativity of the monomers, we demonstrate rudimentary control over these end-groups, forming either bis-H-, mono-H-mono-Br-, or bis-Br-terminated polymers in order of increasing electronegativity.
我们展示了通过Suzuki同聚合反应,利用双(
频哪醇基)二
硼直接聚合对称、双
溴、
噻吩基单体,以较少步骤形成共聚物的方法。通过采用两种方法(新方法和常用的Stille共聚法)制备四种
噻吩基共聚物,并将这种方法与Stille共聚法进行对比。通过
MALDI-TOF质谱分析,我们证明这种方
法能生成高质量、均一的
聚合物,其端基分布狭窄。通过改变单体的电负性,我们初步实现了对这些端基的控制,按照电负性增加的顺序,分别形成双
氢端基、单
氢单
溴端基或双
溴端基的
聚合物。