Modulating the Growth Rate, Aspect Ratio, and Yield of Copper Nanowires with Alkylamines.
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| Title: | Modulating the Growth Rate, Aspect Ratio, and Yield of Copper Nanowires with Alkylamines. |
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| Authors: | Myung Jun Kim1, Alvarez, Samuel1, Tianyu Yan2, Tadepalli, Vaibhav1, Fichthorn, Kristen A.2, Wiley, Benjamin J.1 benjamin.wiley@duke.edu |
| Source: | Chemistry of Materials. 4/24/2018, Vol. 30 Issue 8, p2809-2818. 10p. |
| Subjects: | Alkylamines, Nanowires, Monomolecular films, Chemical synthesis, Chain length (Chemistry) |
| Abstract: | This article shows how the chain length of alkylamine capping agents and the corresponding stability of their self-assembled monolayers on a Cu surface determines the growth rate, yield, and dimensions of Cu nanowires produced in a solution-phase synthesis. Of the 10 linear alkylamines that were tested, only those with 12 or more carbon atoms induced growth of nanowires. The length, yield, and growth rate of nanowires were larger for shorter alkylamines. As the Cu nanowire growth rates were up to 1050 times smaller than the calculated diffusion-limited growth rates--and the alkylamine chain length had no significant effect on the in situ generation of the reducing agent--we conclude the rate of alkylamine-mediated Cu nanowire growth is limited by charge transfer. Electrochemical measurements indicate longer alkylamines form more effective passivation layers that greatly decrease the rate at which Cu-alkylamine complexes are reduced onto a Cu surface. Molecular dynamics simulations show that the energy required for removal of octadecylamine from a self-assembled monolayer on the Cu surface is much larger (3.59 eV) than for removal of tetradecylamine (2.06 eV). Thus, the more stable self-assembled monolayer formed by longer-chain alkylamines leads to greater inhibition of Cu addition, slower growth, reduced yield, and reduced nanowire aspect ratio. [ABSTRACT FROM AUTHOR] |
| Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 129316535 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Modulating the Growth Rate, Aspect Ratio, and Yield of Copper Nanowires with Alkylamines. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Myung+Jun+Kim%22">Myung Jun Kim</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Alvarez%2C+Samuel%22">Alvarez, Samuel</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tianyu+Yan%22">Tianyu Yan</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Tadepalli%2C+Vaibhav%22">Tadepalli, Vaibhav</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Fichthorn%2C+Kristen+A%2E%22">Fichthorn, Kristen A.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Wiley%2C+Benjamin+J%2E%22">Wiley, Benjamin J.</searchLink><relatesTo>1</relatesTo><i> benjamin.wiley@duke.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Chemistry+of+Materials%22">Chemistry of Materials</searchLink>. 4/24/2018, Vol. 30 Issue 8, p2809-2818. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Alkylamines%22">Alkylamines</searchLink><br /><searchLink fieldCode="DE" term="%22Nanowires%22">Nanowires</searchLink><br /><searchLink fieldCode="DE" term="%22Monomolecular+films%22">Monomolecular films</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+synthesis%22">Chemical synthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Chain+length+%28Chemistry%29%22">Chain length (Chemistry)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This article shows how the chain length of alkylamine capping agents and the corresponding stability of their self-assembled monolayers on a Cu surface determines the growth rate, yield, and dimensions of Cu nanowires produced in a solution-phase synthesis. Of the 10 linear alkylamines that were tested, only those with 12 or more carbon atoms induced growth of nanowires. The length, yield, and growth rate of nanowires were larger for shorter alkylamines. As the Cu nanowire growth rates were up to 1050 times smaller than the calculated diffusion-limited growth rates--and the alkylamine chain length had no significant effect on the in situ generation of the reducing agent--we conclude the rate of alkylamine-mediated Cu nanowire growth is limited by charge transfer. Electrochemical measurements indicate longer alkylamines form more effective passivation layers that greatly decrease the rate at which Cu-alkylamine complexes are reduced onto a Cu surface. Molecular dynamics simulations show that the energy required for removal of octadecylamine from a self-assembled monolayer on the Cu surface is much larger (3.59 eV) than for removal of tetradecylamine (2.06 eV). Thus, the more stable self-assembled monolayer formed by longer-chain alkylamines leads to greater inhibition of Cu addition, slower growth, reduced yield, and reduced nanowire aspect ratio. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1021/acs.chemmater.8b00760 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 2809 Subjects: – SubjectFull: Alkylamines Type: general – SubjectFull: Nanowires Type: general – SubjectFull: Monomolecular films Type: general – SubjectFull: Chemical synthesis Type: general – SubjectFull: Chain length (Chemistry) Type: general Titles: – TitleFull: Modulating the Growth Rate, Aspect Ratio, and Yield of Copper Nanowires with Alkylamines. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Myung Jun Kim – PersonEntity: Name: NameFull: Alvarez, Samuel – PersonEntity: Name: NameFull: Tianyu Yan – PersonEntity: Name: NameFull: Tadepalli, Vaibhav – PersonEntity: Name: NameFull: Fichthorn, Kristen A. – PersonEntity: Name: NameFull: Wiley, Benjamin J. IsPartOfRelationships: – BibEntity: Dates: – D: 24 M: 04 Text: 4/24/2018 Type: published Y: 2018 Identifiers: – Type: issn-print Value: 08974756 Numbering: – Type: volume Value: 30 – Type: issue Value: 8 Titles: – TitleFull: Chemistry of Materials Type: main |
| ResultId | 1 |
