| アイテムタイプ |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2025-09-16 |
| タイトル |
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|
タイトル |
レーザー同期時間分解ESR法を用いたC=S二重結合へのラジカル付加反応素過程の観測 |
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言語 |
ja |
| タイトル |
|
|
タイトル |
Laser-Synchronized Time-Resolved ESR Spectroscopy of Elementary Process Involving Radical Addition to C=S Double Bond |
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言語 |
en |
| 言語 |
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|
言語 |
jpn |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
time-resolved ESR spectroscopy |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
free radical |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
addition reaction |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
RAFT |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
| ID登録 |
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|
ID登録 |
10.24792/0002001841 |
|
ID登録タイプ |
JaLC |
| 著者 |
加藤, 将利
稲葉, 喬
川井, 葉子
三宅, 祐輔
中西, 郁夫
河合, 明雄
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| 抄録 |
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内容記述タイプ |
Other |
|
内容記述 |
A time-resolved (TR-ESR) method was applied to observe an elementary process of the radical addition reaction to the C=S double bond of the reversible addition fragmentation chain transfer (RAFT) polymerization reagent (thiobenzoylthio)acetic acid. As for the radical, 1-hydroxycyclohexyl (Hy-CyH), which is easily prepared by UV laser photodissociation of an aromatic ketone compound, was examined. Time evolution of TR-ESR spectra in the reaction system of Hy-CyH and (thiobenzoylthio)acetic acid shows prompt generation of Hy-CyH after UV laser photolysis, followed by the clear appearance of the adduct radical with new bond formation at the S atom at the C=S group in the RAFT reagent. The TR-ESR spectrum of the adduct radical was analyzed according to the hyperfine coupling constants obtained by DFT calculation. Although the spectrum was broad and showed no clear hyperfine structure, the bandwidth of the spectrum was reproduced by the theoretical simulation spectrum. The g value of the adduct radical was larger than that of Hy-CyH, which is a conventional organic free radical. This agrees well with the electronic structure of the adduct radical with two S atoms neighboring the C atom with an unpaired electron. Thus, large spin-orbit coupling of the two S atoms gives rise to a higher g value than Hy-CyH. The addition reaction rate of Hy-CyH and the RAFT reagent was estimated by the time evolution of TR-ESR spectra. |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Other |
|
内容記述 |
原著 2024年度神奈川大学総合理学研究所共同研究助成論文 |
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言語 |
ja |
| 書誌情報 |
ja : Science Journal of Kanagawa University
en : Science Journal of Kanagawa University
巻 36,
p. 33-38,
発行日 2025-07-31
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| ISSN |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
1880-0483 |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12068302 |
| 著者版フラグ |
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|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 出版者 |
|
|
出版者 |
神奈川大学総合理学研究所 |
|
言語 |
ja |
| 出版者 |
|
|
出版者 |
Research Institute for Integrated Science, Kanagawa University |
|
言語 |
en |