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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)
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Submitter: 岡本 一将
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