Electrochemical and infrared spectroscopic study of the self-assembled monolayer of a cyano-bridged dimeric triruthenium complex on gold surface

Hua Xin Zhang; Yoichi Sasaki; Masaaki Abe; Yi Zhang; Shen Ye; Masatoshi Osawa; Kohei Uosaki

doi:10.1016/j.jelechem.2013.12.012

Electrochemical and infrared spectroscopic study of the self-assembled monolayer of a cyano-bridged dimeric triruthenium complex on gold surface

Hua Xin Zhang, Yoichi Sasaki, Masaaki Abe, Yi Zhang, Shen Ye, Masatoshi Osawa, Kohei Uosaki

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

7 Citations (Scopus)

Abstract

A new cyano-bridged dimeric oxo-centered triruthenium complex [{Ru ₃(μ₃-O)(μ-CH₃COO)₆(py) ₂}(μ-CN){Ru₃(μ₃-O)(μ-CH ₃COO)₆(py)(L_py-SS)}]⁺ (py = pyridine, L_py-SS = (C₅H₄N-CH ₂NHC(O)(CH₂)₄CH(CH₂)₂SS) ([1]⁺) has been prepared, characterized, and confined on an Au(1 1 1) surface to form self-assembled monolayers (SAMs) (1/Au). The redox and IR spectroscopic properties observed for the discrete ions are essentially preserved in its SAMs. The molecules of SAMs 1/Au stand up with the cyano groups tilted to the gold surface. The electronic structures of 1/Au in different oxidation states have been studied by in situ infrared spectroscopy monitoring the stretching modes of the cyano group. The extent of cyano-mediated electronic communications between two triruthenium units in the SAMs has been successfully tuned by simply changing the electrolyte solutions from 0.1 M n-Bu ₄NPF₆-CH₂Cl₂ to aqueous 0.1 M HClO₄.

Original language	English
Pages (from-to)	51-55
Number of pages	5
Journal	Journal of Electroanalytical Chemistry
Volume	714-715
DOIs	https://doi.org/10.1016/j.jelechem.2013.12.012
Publication status	Published - 2014 Feb 1
Externally published	Yes

Keywords

Bridged cyanide
Gold surface
In situ infrared spectroscopy
Oxo-centered triruthenium complexes
Self-assembled monolayer

ASJC Scopus subject areas

Analytical Chemistry
Chemical Engineering(all)
Electrochemistry

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10.1016/j.jelechem.2013.12.012

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Electrochemical and infrared spectroscopic study of the self-assembled monolayer of a cyano-bridged dimeric triruthenium complex on gold surface. / Zhang, Hua Xin; Sasaki, Yoichi; Abe, Masaaki; Zhang, Yi; Ye, Shen; Osawa, Masatoshi; Uosaki, Kohei.

In: Journal of Electroanalytical Chemistry, Vol. 714-715, 01.02.2014, p. 51-55.

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

@article{b7115f9e67874b6fa179c8ae548d9c3e,

title = "Electrochemical and infrared spectroscopic study of the self-assembled monolayer of a cyano-bridged dimeric triruthenium complex on gold surface",

abstract = "A new cyano-bridged dimeric oxo-centered triruthenium complex [{Ru 3(μ3-O)(μ-CH3COO)6(py) 2}(μ-CN){Ru3(μ3-O)(μ-CH 3COO)6(py)(Lpy-SS)}]+ (py = pyridine, Lpy-SS = (C5H4N-CH 2NHC(O)(CH2)4CH(CH2)2SS) ([1]+) has been prepared, characterized, and confined on an Au(1 1 1) surface to form self-assembled monolayers (SAMs) (1/Au). The redox and IR spectroscopic properties observed for the discrete ions are essentially preserved in its SAMs. The molecules of SAMs 1/Au stand up with the cyano groups tilted to the gold surface. The electronic structures of 1/Au in different oxidation states have been studied by in situ infrared spectroscopy monitoring the stretching modes of the cyano group. The extent of cyano-mediated electronic communications between two triruthenium units in the SAMs has been successfully tuned by simply changing the electrolyte solutions from 0.1 M n-Bu 4NPF6-CH2Cl2 to aqueous 0.1 M HClO4.",

keywords = "Bridged cyanide, Gold surface, In situ infrared spectroscopy, Oxo-centered triruthenium complexes, Self-assembled monolayer",

author = "Zhang, {Hua Xin} and Yoichi Sasaki and Masaaki Abe and Yi Zhang and Shen Ye and Masatoshi Osawa and Kohei Uosaki",

note = "Funding Information: This work was partly supported by the JSPS KAKENHI Grant (No. 24550143) from the Ministry of Education, Culture, Sports, Science and Technology of Japan. H.-X.Z. is grateful to the Japan Society for the Promotion of Science for a postdoctoral fellowship (P05123). MA and SY acknowledge financial support from a Grant-in-Aid for Scientific Research on Innovative Areas “Coordination Programming” (Area 2107, Nos. 24108701 and 24108730) and the Cooperative Research Program of Catalysis Research Center, Hokkaido University (No. 12A0007). ",

year = "2014",

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day = "1",

doi = "10.1016/j.jelechem.2013.12.012",

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volume = "714-715",

pages = "51--55",

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T1 - Electrochemical and infrared spectroscopic study of the self-assembled monolayer of a cyano-bridged dimeric triruthenium complex on gold surface

AU - Zhang, Hua Xin

AU - Sasaki, Yoichi

AU - Abe, Masaaki

AU - Zhang, Yi

AU - Ye, Shen

AU - Osawa, Masatoshi

AU - Uosaki, Kohei

N1 - Funding Information: This work was partly supported by the JSPS KAKENHI Grant (No. 24550143) from the Ministry of Education, Culture, Sports, Science and Technology of Japan. H.-X.Z. is grateful to the Japan Society for the Promotion of Science for a postdoctoral fellowship (P05123). MA and SY acknowledge financial support from a Grant-in-Aid for Scientific Research on Innovative Areas “Coordination Programming” (Area 2107, Nos. 24108701 and 24108730) and the Cooperative Research Program of Catalysis Research Center, Hokkaido University (No. 12A0007).

PY - 2014/2/1

Y1 - 2014/2/1

N2 - A new cyano-bridged dimeric oxo-centered triruthenium complex [{Ru 3(μ3-O)(μ-CH3COO)6(py) 2}(μ-CN){Ru3(μ3-O)(μ-CH 3COO)6(py)(Lpy-SS)}]+ (py = pyridine, Lpy-SS = (C5H4N-CH 2NHC(O)(CH2)4CH(CH2)2SS) ([1]+) has been prepared, characterized, and confined on an Au(1 1 1) surface to form self-assembled monolayers (SAMs) (1/Au). The redox and IR spectroscopic properties observed for the discrete ions are essentially preserved in its SAMs. The molecules of SAMs 1/Au stand up with the cyano groups tilted to the gold surface. The electronic structures of 1/Au in different oxidation states have been studied by in situ infrared spectroscopy monitoring the stretching modes of the cyano group. The extent of cyano-mediated electronic communications between two triruthenium units in the SAMs has been successfully tuned by simply changing the electrolyte solutions from 0.1 M n-Bu 4NPF6-CH2Cl2 to aqueous 0.1 M HClO4.

AB - A new cyano-bridged dimeric oxo-centered triruthenium complex [{Ru 3(μ3-O)(μ-CH3COO)6(py) 2}(μ-CN){Ru3(μ3-O)(μ-CH 3COO)6(py)(Lpy-SS)}]+ (py = pyridine, Lpy-SS = (C5H4N-CH 2NHC(O)(CH2)4CH(CH2)2SS) ([1]+) has been prepared, characterized, and confined on an Au(1 1 1) surface to form self-assembled monolayers (SAMs) (1/Au). The redox and IR spectroscopic properties observed for the discrete ions are essentially preserved in its SAMs. The molecules of SAMs 1/Au stand up with the cyano groups tilted to the gold surface. The electronic structures of 1/Au in different oxidation states have been studied by in situ infrared spectroscopy monitoring the stretching modes of the cyano group. The extent of cyano-mediated electronic communications between two triruthenium units in the SAMs has been successfully tuned by simply changing the electrolyte solutions from 0.1 M n-Bu 4NPF6-CH2Cl2 to aqueous 0.1 M HClO4.

KW - Bridged cyanide

KW - Gold surface

KW - In situ infrared spectroscopy

KW - Oxo-centered triruthenium complexes

KW - Self-assembled monolayer

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DO - 10.1016/j.jelechem.2013.12.012

M3 - Article

AN - SCOPUS:84892174446

VL - 714-715

SP - 51

EP - 55

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

SN - 1572-6657

ER -

Electrochemical and infrared spectroscopic study of the self-assembled monolayer of a cyano-bridged dimeric triruthenium complex on gold surface

Abstract

Keywords

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