Inverse Relationship of Reorganization Energy to The Number of π Electrons from Perspective of Vibronic Coupling Density
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- SHIZU Katsuyuki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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- SATO Tohru
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan Unit of Elements Strategy Initiative for Catalysts & Batteries, Kyoto University, Kyoto 615-8510, Japan
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- TANAKA Kazuyoshi
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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Abstract
The 1/Nπ relationship states that the reorganization energy λ of a molecule associated with charge transport is inversely proportional to the number Nπ of sites or π electrons involved in a π state of the molecule: λ∝1/Nπ. We investigated the fundamental question of how λ is influenced by Nπ, from the perspective of the vibronic coupling density. Vibronic coupling density analysis showed that symmetric distribution of the electron-density difference Δρ is essential for this relationship. The relationship can be more precisely rephrased as the size of the vibronic coupling constant is inversely proportional to the square-root of the number of sites over which Δρ is delocalized. Our findings provide not only a fundamental understanding of the 1/Nπ relationship, but also a practical approach to the molecular design of functional materials through controlling Δρ and vibronic couplings.
Journal
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- Journal of Computer Chemistry, Japan
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Journal of Computer Chemistry, Japan 12 (4), 215-221, 2013
Society of Computer Chemistry, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680156710400
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- NII Article ID
- 130003382721
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- NII Book ID
- AA11657986
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- ISSN
- 13473824
- 13471767
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- NDL BIB ID
- 025190188
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed