| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
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|
タイトル |
Selective chemical bond breaking characteristically induced by resonant core excitation of ester compounds on a surface |
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言語 |
en |
| 作成者 |
Wada, Shin-ichi
Kizaki, Hiroyuki
Matsumoto, Yoshihiro
Sumii, Ryohei
Tanaka, Kenichiro
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
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権利情報 |
Copyright (c) 2006 IOP Publishing Ltd. |
| 主題 |
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主題Scheme |
NDC |
|
主題 |
420 |
| 内容記述 |
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内容記述 |
Inner-shell excitation possesses an attractive potential to induce selective chemical bond breaking due to its special localization and atomic selectivity. This paper reviews our recent works about site-selective (or site-specific) photon stimulated desorption (PSD) of core-excited ester compounds, poly(methyl methacrylate) (PMMA) thin films, condensed methyl isobutyrate (MIB) multilayers, methyl ester terminated self-assembled monolayers (SAMs), partially deuterided SAMs and ethyl ester terminated SAMs. Exact selective bond breaking was observed for all molecular systems except for MIB multilayers: COO-R (R = CH3, C2H5) breaking in the O 1s(OR) excitations and CO-OR in the excitation. Such resonant excitations take place within the functional group locally and the initial memory of the excited site and its localization character is effectively conserved during the PSD process even after subsequent Auger decays and ionic dissociation/desorption. Variation of selectivity observed here indicates the importance of the molecular environment and the contribution of the indirect dissociation process due to statistical energy relaxation and x-ray-induced electron stimulated desorption. The obvious polarization dependence measured only for selectively desorbing ions also supports the above characteristics. Neutral fragments desorbing from core-excited PMMA follow the profile of the total electron yield spectrum but not the partial ion yield of corresponding ions. This result indicates that ionic dissociation locally promoted by Coulomb repulsion plays an important role to reveal site-selectivity in chemical reactions induced by core-level excitation. |
|
言語 |
en |
| 出版者 |
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出版者 |
IOP |
| 言語 |
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|
言語 |
eng |
| 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 |
journal article |
| 出版タイプ |
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|
出版タイプ |
AO |
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出版タイプResource |
http://purl.org/coar/version/c_b1a7d7d4d402bcce |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
10.1088/0953-8984/18/30/S13 |
| 関連情報 |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
http://dx.doi.org/10.1088/0953-8984/18/30/S13 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0953-8984 |
| 収録物識別子 |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10672168 |
| 開始ページ |
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|
開始ページ |
S1629 |
| 書誌情報 |
Journal of Physics Condensed Matter
Journal of Physics Condensed Matter
巻 18,
号 30,
p. S1629-S1653,
発行日 2006-08-02
|
| 旧ID |
17101 |
JPCM_18_s1629.pdf (1.1 MB)
