| アイテムタイプ |
学術雑誌論文 / Journal Article.(1) |
| 公開日 |
2024-07-18 |
| 書誌情報 |
en : Physical Chemistry Chemical Physics
巻 25,
号 32,
p. 21317-21323,
発行日 2023-07-18
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| タイトル |
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|
タイトル |
Charge-transfer state and state mixing in tetracyanoquinodimethane probed using electroabsorption spectroscopy |
|
言語 |
en |
| 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 |
| 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 |
| 著者 |
Islam, Ahatashamul
Syundo, Kensuke
飯森, 俊文
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Tetracyanoquinodimethane (TCNQ) is an important constituent of organic conductors and a versatile electron acceptor. TCNQ exhibited thermally activated delayed fluorescence and an unusually long fluorescence lifetime. In this study, we studied the Stark effect on the absorption spectrum of TCNQ using electroabsorption spectroscopy to gain insights into its photophysics. The electroabsorption spectrum was simulated using multiple absorption bands for different electronic states, which were characterized by different dipole moments and polarizabilities. These electronic states are identified as a locally excited (LE) state with a high oscillator strength and zero dipole moment, and an intramolecular charge transfer (ICT) state with a nonzero dipole moment. The mixing of the LE state with the ICT state is augmented when the molecule is perturbed by an electric field. We provide tangible experimental evidence establishing the key role of mixing between the emissive LE and nonemissive ICT states in the deactivation pathway of electronically excited TCNQ. The dipole moment of the ICT state suggests symmetry breaking of the structure belonging to the D2h point group. |
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言語 |
en |
| 出版者 |
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出版者 |
Royal Society of Chemistry |
|
言語 |
en |
| DOI |
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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 |
10.1039/D3CP01669B |
| 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 |
1463-9076 |
| 権利 |
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|
権利情報 |
© Royal Society of Chemistry 2024 |
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言語 |
en |
| 著者版フラグ |
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出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
EA_TCNQ_ms_PCCP-R1-2-A.pdf (865 KB)
