| 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 |
Nonradiative decay dynamics of methyl-4-hydroxycinnamate and its hydrated complex revealed by picosecond pump-probe spectroscopy |
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言語 |
en |
| 作成者 |
Shimada, Daiki
Kusaka, Ryoji
Inokuchi, Yoshiya
Ehara, Masahiro
Ebata, Takayuki
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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) the Owner Societies 2012 |
| 主題 |
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主題Scheme |
NDC |
|
主題 |
430 |
| 内容記述 |
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内容記述 |
The lifetimes of methyl 4-hydroxycinnamate (OMpCA) and its mono-hydrated complex (OMpCA-H2O) in the S1 state have been measured by picosecond pump-probe spectroscopy in a supersonic beam. For OMpCA, the lifetime of the S1 - S0 origin is 8 – 9 ps. On the other hand, the lifetime of OMpCA-H2O complex at the origin is 930 ps, which is ~100 times longer than that. Furthermore, in the complex the S1 lifetime shows rapid decrease at an energy of ~200 cm-1 above the origin and finally becomes as short as 9 ps at ~500 cm-1. Theoretical calculations with symmetry-adapted cluster-configuration interaction (SAC-CI) method suggest that the observed lifetime behavior of the two species is described by noradiative decay dynamics involving trans →cis isomerization. That is both OMpCA and OMpCA-H2O in the S1 sate decay due to the trans→cis isomerization, and the large difference of the lifetimes between them is due to the difference of the isomerization potential energy curve. In OMpCA, the trans → cis isomerization occurs smoothly without a barrier on the S1 surface, while in OMpCA-H2O complex, there exists a barrier along the isomerization coordinate. The calculated barrier height of OMpCA-H2O is in good agreement with that observed experimentally. |
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言語 |
en |
| 出版者 |
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出版者 |
Royal Society of Chemistry |
| 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 |
10.1039/C2CP24056D |
| 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/10.1039/C2CP24056D |
| 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 |
1463-9076 |
| 開始ページ |
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開始ページ |
8999 |
| 書誌情報 |
Physical Chemistry Chemical Physics
Physical Chemistry Chemical Physics
巻 14,
号 25,
p. 8999-9005,
発行日 2012-03-13
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| 旧ID |
37650 |
PhysChemChemPhys_2012_14_8999.pdf (1.6 MB)
