| 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 |
Anomalous cage effect in the excited state dynamics of catechol in the 18C6-catecol host-guest complex |
|
言語 |
en |
| 作成者 |
Morishima, Fumiya
Kusaka, Ryoji
Inokuchi, Yoshiya
Haino, Takeharu
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) 2014 American Chemical Society |
| 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 |
We present the structure of 18C6-catechol host-guest complex and the effect of the complexation on the S1 dynamics of catechol studied under a supersonically cooled gas phase condition and in cyclohexane solution. In the gas phase bare catechol, two adjacent OH groups have an intramolecular hydrogen-bonded structure. On the other hand, in the 18C6-catechol (1:1) complex both of the catechol OH groups are hydrogen-bonded to the oxygen atoms of 18C6. This complex formation greatly changes the character of the S1 state of catechol. That is, the S1 lifetime of bare catechol is reported to be 7 ps, while the 18C6-catechol complex was obtained to be 10.3 ns. This anomalous S1 lifetime elongation of catechol upon the complexation is attributed to a large energy gap between the S1 (ππ*) and S2 states by the switching from the intramolecular hydrogen-bond to the intermolecular hydrogen-bond in the host-guest complex. The formation of the18C6-catechol complex formation was also confirmed in cyclohexane solution, and an anomalous increase of fluorescence quantum yield of catechol was also observed. From the concentration dependence of the fluorescence intensity, it was confirmed that 18C6 and catechol also form (1:1) host-guest complex in bulk system. An equilibrium constant for the18C6 + catechol ⇄ 18C6・・・catechol reaction was obtained. It is suggested that that 18C6 can act as a sensor of detecting catechol. |
|
言語 |
en |
| 内容記述 |
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内容記述タイプ |
Other |
|
内容記述 |
This is a preprint of an article published by American Chemical Society in Journal of Physical Chemistry B, 2015, available online: http://pubs.acs.org/doi/abs/10.1021/jp508619f. |
| 出版者 |
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出版者 |
American Chemical Society |
| 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 |
|
|
出版タイプ |
AO |
|
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 |
10.1021/jp508619f |
| 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/10.1021/jp508619f |
| 関連情報 |
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|
識別子タイプ |
PMID |
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関連識別子 |
25350575 |
| 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 |
1520-6106 |
| 開始ページ |
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開始ページ |
2557 |
| 書誌情報 |
Journal of Physical Chemistry B
Journal of Physical Chemistry B
巻 119,
号 6,
p. 2557-2565,
発行日 2015-02-12
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| 旧ID |
37982 |
JPhysChemB_2015_119_2557.pdf (1.3 MB)
