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Synthesis and properties of novel polymers having S-methyldibenzothiophenium salt moieties by Osamu Shimomura; Toshihiko Sato; Ikuyoshi Tomita; Masato Suzuki; Takeshi Endo is a Materials Science article available to read on EtoBox.

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A polymer having dibenzothiophenium salt moieties [poly(sulfonium salt), 2] was prepared by the reaction of poly(2-vinyldibenzothiophene) (1) with CH 3 I and AgBF 4 in CH 2 ClCH 2 Cl at room temperature for 24 h. The obtained polymer 2 was found to contain 71% of the methyldibenzothiophenium tetrafluoroborate unit. A monomer carrying the sulfonium salt moiety, i.e., 5-methyl-2-vinyldibenzothiophenium tetrafluoroborate ( 4), was independently prepared and subjected to radical polymerization to give a polymer ( 5) in 88% yield (methyldibenzothiophenium tetrafluoroborate unit: 79%). The thermal decompositions of 2 and 5 took place in two steps; the first step involved the formation of polymer 1 by demethylation.

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Author

Osamu Shimomura; Toshihiko Sato; Ikuyoshi Tomita; Masato Suzuki; Takeshi Endo

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-624X)

Published

1998

Language

EN

Field

Materials Science (Physical Sciences)