Adlayer Structure of and Electrochemical O2 Reduction on Cobalt Porphine-Modified and Cobalt Octaethylporphyrin-Modified Au(111) in HClO 4

Soichiro Yoshimoto; Junji Inukai; Akinori Tada; Toru Abe; Tatsuki Morimoto; Atsuhiro Osuka; Hiroyuki Furuta; Kingo Itaya

doi:10.1021/jp0366421

Adlayer Structure of and Electrochemical O₂ Reduction on Cobalt Porphine-Modified and Cobalt Octaethylporphyrin-Modified Au(111) in HClO ₄

Soichiro Yoshimoto, Junji Inukai, Akinori Tada, Toru Abe, Tatsuki Morimoto, Atsuhiro Osuka, Hiroyuki Furuta, Kingo Itaya

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

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Abstract

Adlayers of cobalt(II) porphine (CoP) and [2,3,7,8,12,13,17,18-octaethyl-21H,23-H-porphine]cobalt(II) (CoOEP) were formed on Au(111) by immersing the substrate in a benzene solution containing either CoP or CoOEP molecules and investigated in 0.1 M HClO₄ by using in situ scanning tunneling microscopy. Highly ordered arrays of CoP were observed on the Au(111)-(1×1) surface under controlled potential conditions. The adlayer of CoOEP molecules was also highly ordered, whereas the Au(111) substrate was found to become reconstructed upon adsorption of CoOEP Both CoP and CoOEP molecules were closely packed on Au(111) On the adlayers of CoP and CoOEP, the electrochemical reduction of O₂ was examined in 0.1 M HClO₄ saturated with O₂. The adlayers of both CoP and CoOEP on Au(111) enhanced the reduction of O₂.

Original language	English
Pages (from-to)	1948-1954
Number of pages	7
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	6
DOIs	https://doi.org/10.1021/jp0366421
Publication status	Published - Feb 12 2004

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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title = "Adlayer Structure of and Electrochemical O2 Reduction on Cobalt Porphine-Modified and Cobalt Octaethylporphyrin-Modified Au(111) in HClO 4",

abstract = "Adlayers of cobalt(II) porphine (CoP) and [2,3,7,8,12,13,17,18-octaethyl-21H,23-H-porphine]cobalt(II) (CoOEP) were formed on Au(111) by immersing the substrate in a benzene solution containing either CoP or CoOEP molecules and investigated in 0.1 M HClO4 by using in situ scanning tunneling microscopy. Highly ordered arrays of CoP were observed on the Au(111)-(1×1) surface under controlled potential conditions. The adlayer of CoOEP molecules was also highly ordered, whereas the Au(111) substrate was found to become reconstructed upon adsorption of CoOEP Both CoP and CoOEP molecules were closely packed on Au(111) On the adlayers of CoP and CoOEP, the electrochemical reduction of O2 was examined in 0.1 M HClO4 saturated with O2. The adlayers of both CoP and CoOEP on Au(111) enhanced the reduction of O2.",

author = "Soichiro Yoshimoto and Junji Inukai and Akinori Tada and Toru Abe and Tatsuki Morimoto and Atsuhiro Osuka and Hiroyuki Furuta and Kingo Itaya",

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doi = "10.1021/jp0366421",

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TY - JOUR

T1 - Adlayer Structure of and Electrochemical O2 Reduction on Cobalt Porphine-Modified and Cobalt Octaethylporphyrin-Modified Au(111) in HClO 4

AU - Yoshimoto, Soichiro

AU - Inukai, Junji

AU - Tada, Akinori

AU - Abe, Toru

AU - Morimoto, Tatsuki

AU - Osuka, Atsuhiro

AU - Furuta, Hiroyuki

AU - Itaya, Kingo

PY - 2004/2/12

Y1 - 2004/2/12

N2 - Adlayers of cobalt(II) porphine (CoP) and [2,3,7,8,12,13,17,18-octaethyl-21H,23-H-porphine]cobalt(II) (CoOEP) were formed on Au(111) by immersing the substrate in a benzene solution containing either CoP or CoOEP molecules and investigated in 0.1 M HClO4 by using in situ scanning tunneling microscopy. Highly ordered arrays of CoP were observed on the Au(111)-(1×1) surface under controlled potential conditions. The adlayer of CoOEP molecules was also highly ordered, whereas the Au(111) substrate was found to become reconstructed upon adsorption of CoOEP Both CoP and CoOEP molecules were closely packed on Au(111) On the adlayers of CoP and CoOEP, the electrochemical reduction of O2 was examined in 0.1 M HClO4 saturated with O2. The adlayers of both CoP and CoOEP on Au(111) enhanced the reduction of O2.

AB - Adlayers of cobalt(II) porphine (CoP) and [2,3,7,8,12,13,17,18-octaethyl-21H,23-H-porphine]cobalt(II) (CoOEP) were formed on Au(111) by immersing the substrate in a benzene solution containing either CoP or CoOEP molecules and investigated in 0.1 M HClO4 by using in situ scanning tunneling microscopy. Highly ordered arrays of CoP were observed on the Au(111)-(1×1) surface under controlled potential conditions. The adlayer of CoOEP molecules was also highly ordered, whereas the Au(111) substrate was found to become reconstructed upon adsorption of CoOEP Both CoP and CoOEP molecules were closely packed on Au(111) On the adlayers of CoP and CoOEP, the electrochemical reduction of O2 was examined in 0.1 M HClO4 saturated with O2. The adlayers of both CoP and CoOEP on Au(111) enhanced the reduction of O2.

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U2 - 10.1021/jp0366421

DO - 10.1021/jp0366421

M3 - Article

AN - SCOPUS:1342283821

SN - 1520-6106

VL - 108

SP - 1948

EP - 1954

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 6

ER -

Adlayer Structure of and Electrochemical O₂ Reduction on Cobalt Porphine-Modified and Cobalt Octaethylporphyrin-Modified Au(111) in HClO ₄

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