Adsorption behaviors of V                         2                         O                         5                          nanowires on binary mixed self-assembled monolayers

Jae Pil Koo; Yong Kwan Kim; Jeong Sook Ha

doi:10.1016/j.apsusc.2006.02.050

Adsorption behaviors of V ₂ O ₅ nanowires on binary mixed self-assembled monolayers

Jae Pil Koo, Yong Kwan Kim, Jeong Sook Ha

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The adsorption behaviors of V ₂ O ₅ nanowires on binary mixed self-assembled monolayers (SAMs) were investigated with variation of the mixing ratio of two differently terminated thiolates on Au. Hydroxyl-covered V ₂ O ₅ nanowires showed a preferential adsorption on amine (NH ₂ )-terminated thiolates over methyl (CH ₃ )-terminated ones. However, on the binary mixed SAM of NH ₂ - and CH ₃ -terminated thiols, the adsorption behavior did not follow a simple expectation based upon the electrostatic interaction. The total number of adsorbed V ₂ O ₅ nanowires increased with the mole fraction of NH ₂ -terminated thiolates up to χ _{N 2} ∼ 0.5, then it decreased with further increase of χ _{N H2} . The height distribution of adsorbed nanowires showed that the relative portion of the agglomerated wires thicker than 3.5 nm to individual wires thinner than 3.5 nm increased up to χ _{N H2} ∼ 0.75 and then it decreased with further increase of χ _{N H2} . The dispersion of molecules with polar-functional groups as well as the molecular ordering of mixed SAMs is attributed to such adsorption behaviors of V ₂ O ₅ nanowires.

Original language	English
Pages (from-to)	1528-1533
Number of pages	6
Journal	Applied Surface Science
Volume	253
Issue number	3
DOIs	https://doi.org/10.1016/j.apsusc.2006.02.050
Publication status	Published - 2006 Nov 30

Bibliographical note

Funding Information:
This work was supported by Grant No. R01-2005-000-10648-0 (2005) from the Basic Research Program of the Korean Science and Engineering Foundation and Grant No. KRF-2004-005-C00068 from Korea Research Foundation.

Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.

Keywords

Atomic force microscope
Binary mixed self-assembled monolayers
Selective adsorption
V O nanowires

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2006.02.050

Cite this

Adsorption behaviors of V ₂ O ₅ nanowires on binary mixed self-assembled monolayers . / Koo, Jae Pil; Kim, Yong Kwan; Ha, Jeong Sook.
In: Applied Surface Science, Vol. 253, No. 3, 30.11.2006, p. 1528-1533.

Research output: Contribution to journal › Article › peer-review

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abstract = " The adsorption behaviors of V 2 O 5 nanowires on binary mixed self-assembled monolayers (SAMs) were investigated with variation of the mixing ratio of two differently terminated thiolates on Au. Hydroxyl-covered V 2 O 5 nanowires showed a preferential adsorption on amine (NH 2 )-terminated thiolates over methyl (CH 3 )-terminated ones. However, on the binary mixed SAM of NH 2 - and CH 3 -terminated thiols, the adsorption behavior did not follow a simple expectation based upon the electrostatic interaction. The total number of adsorbed V 2 O 5 nanowires increased with the mole fraction of NH 2 -terminated thiolates up to χ N 2 ∼ 0.5, then it decreased with further increase of χ N H2 . The height distribution of adsorbed nanowires showed that the relative portion of the agglomerated wires thicker than 3.5 nm to individual wires thinner than 3.5 nm increased up to χ N H2 ∼ 0.75 and then it decreased with further increase of χ N H2 . The dispersion of molecules with polar-functional groups as well as the molecular ordering of mixed SAMs is attributed to such adsorption behaviors of V 2 O 5 nanowires.",

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N2 - The adsorption behaviors of V 2 O 5 nanowires on binary mixed self-assembled monolayers (SAMs) were investigated with variation of the mixing ratio of two differently terminated thiolates on Au. Hydroxyl-covered V 2 O 5 nanowires showed a preferential adsorption on amine (NH 2 )-terminated thiolates over methyl (CH 3 )-terminated ones. However, on the binary mixed SAM of NH 2 - and CH 3 -terminated thiols, the adsorption behavior did not follow a simple expectation based upon the electrostatic interaction. The total number of adsorbed V 2 O 5 nanowires increased with the mole fraction of NH 2 -terminated thiolates up to χ N 2 ∼ 0.5, then it decreased with further increase of χ N H2 . The height distribution of adsorbed nanowires showed that the relative portion of the agglomerated wires thicker than 3.5 nm to individual wires thinner than 3.5 nm increased up to χ N H2 ∼ 0.75 and then it decreased with further increase of χ N H2 . The dispersion of molecules with polar-functional groups as well as the molecular ordering of mixed SAMs is attributed to such adsorption behaviors of V 2 O 5 nanowires.

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