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Binding of Sulfate-Terminated Surfactants with Different Alkyl Chain Lengths to Viologen Sites Covalently Embedded in the Interior of a Self-Assembled Monolayer on a Au Electrode
http://hdl.handle.net/10069/00041215
http://hdl.handle.net/10069/000412158ccb62ee-eed4-4702-bc18-3f99282119dc
名前 / ファイル | ライセンス | アクション |
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Langmuir38_979.pdf (1.2 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-02-03 | |||||
タイトル | ||||||
タイトル | Binding of Sulfate-Terminated Surfactants with Different Alkyl Chain Lengths to Viologen Sites Covalently Embedded in the Interior of a Self-Assembled Monolayer on a Au Electrode | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | viologen thiol | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | self-assembled monolayer | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | alkyl sulfate | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | electrostatic binding | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | chain-chain interaction | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Traube rule | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Sagara, Takamasa
× Sagara, Takamasa× Hagi, Youichi× Toyohara, Masaki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Although much has become well-known about the structures and properties of redox-active self-assembled mon-olayers (SAMs) on electrode surfaces, their uses as electro-active platforms are still under development. Interaction of the SAM with foreign molecules such as amphiphiles in the solution phase brings about new functionalities. We focused on the enhancement of the redox-dependent binding of anionic surfactants to the cationic redox-active site attached to an alkyl-thiol molecule that forms a SAM on a poly-crystalline Au electrode. There are two main points. One is that we embedded a viologen site in the midway of the alkyl chain to facilitate ion-pairing in the micro-environment of a low dielectric constant. The other is the use of alkyl chain-chain interaction as an important mode of attraction between the surfactants and SAM. We found in the SAM with viologen sites located midway that the binding of anionic surfactants and inorganic anions causes a negative shift of the formal potential of the redox couple of viologen radical cation/viologen dication in line with the binding equilib-rium. In contrast, the anion binding is weak and trivial when viologens are located at the SAM surface. For the SAM with viologens located midway, the surfactant chain-length dependent shift of the formal potential was clearly observed; it fol-lowed the Traube rule but with a smaller slope than that in the original rule. The strong binding enabled us to discuss the blocking and electron transfer mediation abilities of the Au/viologen-SAM/dodecyl sulfate adlayer. | |||||
書誌情報 |
Langmuir 巻 38, 号 3, p. 979-986, 発行日 2022-01-14 |
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出版者 | ||||||
出版者 | American Chemical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0743-7463 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1021/acs.langmuir.1c02376 | |||||
権利 | ||||||
権利情報 | ©2022, American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright (c) American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.langmuir.1c02376 | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Langmuir, 38(3), pp.979–986; 2022 |