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Synfacts 2007(11): 1154-1154  
DOI: 10.1055/s-2007-991276
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart · New York

Chain-Growth Polymerization to Form Conjugated Polymers

Contributor(s): Timothy M. Swager, Brett VanVeller
A. Yokoyama, H. Suzuki, Y. Kubota, K. Ohuchi, H. Higashimura*, T. Yokozawa*
Kanagawa University, Yokohama, Japan
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Publication History

Publication Date:
23 October 2007 (online)

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Significance

Traditionally, π-conjugated polymers have been produced through a step-growth, polycondensation method. However, the molecular weight and polydispersity are not well controlled. The authors demonstrate the first chain-growth Suzuki-Miyaura polymerization of poly­arylenes through use of an initiator unit 2. Application of MALDI and both conversion and competition studies confirm that the reaction initiates from 2 and proceeds through intramolecular transfer of the Pd(0) from 3 to 4 yielding homopolymers of 1a (Mn > 17700; PDI = 1.33) and 1b (Mn = 11000; PDI = 1.53).