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Dynamics of radical cations of poly(4-hydroxystyrene) in the presence and absence of triphenylsulfonium triflate as determined by pulse radiolysis of its highly concentrated solution

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Title: Dynamics of radical cations of poly(4-hydroxystyrene) in the presence and absence of triphenylsulfonium triflate as determined by pulse radiolysis of its highly concentrated solution
Authors: Okamoto, Kazumasa Browse this author →KAKEN DB
Ishida, Takuya Browse this author
Yamamoto, Hiroki Browse this author
Kozawa, Takahiro Browse this author
Fujiyoshi, Ryoko Browse this author →KAKEN DB
Umegaki, Kikuo Browse this author
Keywords: Poly(4-hydroxystyrene)
Deprotonation
Pulse radiolysis
Radiation chemistry
Resist
Issue Date: 16-Jul-2016
Publisher: Elsevier
Journal Title: Chemical physics letters
Volume: 657
Start Page: 44
End Page: 48
Publisher DOI: 10.1016/j.cplett.2016.05.058
Abstract: Pulse radiolysis of highly concentrated poly(4-hydroxystyrene) (PHS) solutions in cyclohexanone and p-dioxane was performed both with and without an onium-type photoacid generator (PAG). With increasing PHS concentration, the rate constant of deprotonation of PHS radical cations was found to decrease. In the presence of PAG, the yield of the multimer radical cation of PHS was shown to decrease. We found that pairing between the anions produced by the attachment of dissociative electrons of PAGs and the monomer PHS radical cations restrict local molecular motions, leading to the formation of the multimer PHS radical cations.
Rights: © 2016, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/70977
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 岡本 一将

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