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Synfacts 2008(11): 1166-1166  
DOI: 10.1055/s-0028-1083479
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart ˙ New York

High Sulfur-Content Polyimides

Contributor(s): Timothy M. Swager, Eric L. Dane
N-H. You, Y. Suzuki, D. Yorifuji, S. Ando, M. Ueda*
Tokyo Institute of Technology, Japan
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Publication History

Publication Date:
23 October 2008 (online)

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Significance

The authors report the synthesis of a new diamine monomer that contains six sulfur atoms. The high sulfur content is necessary to produce polyimides with a large refractive index. Monomer 3 polymerized with three different dianhydrides with aromatic cores, one of which is shown above, to obtain polyimide films with a ­refractive index greater than 1.7.