761419-35-6Relevant articles and documents
Using bis(pinacolato)diboron to improve the quality of regioregular conjugated co-polymers
Brouwer, Frank,Alma, Jan,Valkenier, Hennie,Voortman, Thomas P.,Hillebrand, Jorrit,Chiechi, Ryan C.,Hummelen, Jan C.
, p. 1582 - 1592 (2011)
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.
