Coronene-Iodine Coadsorbed Adlayers on Au(111) Surfaces Promoted by Electrochemical Potential Control

Kunitake, Masashi; Ishikawa, Yudai; Matsuda, Shuhei; Abe, Satoshi; Miyasato, Youya; Higuchi, Rintarou; Sakata, Masayo

doi:10.1149/1.2795618

Cited by 5 publications

(2 citation statements)

References 14 publications

(18 reference statements)

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“…Small satellite spots are thought to be Br – produced by the decomposition of AuBr 4 – . According to previous studies, halides such as Cl – , Br – , and I – are specifically adsorbed on metal electrode surfaces. , Further, a similar mixed structure was observed in the coronene adlayer on Au(111) when KI was used . In addition, various cobalt phthalocyanine adlayer structures were formed when iodine was used .…”

Section: Introductionsupporting

confidence: 58%

Tuning of 2D Nanographene Adlayers on Au(111) by Electrodeposition of Metal Halide Complexes

Ogata¹

2019

ACS Appl. Mater. Interfaces

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The electrodeposition of AuBr4 – and PtBr4 2– onto an adlayer of circobiphenyla structurally defined nanographene with low symmetryon a Au(111) electrode was investigated via electrochemical scanning tunneling microscopy (EC-STM) to control and understand the formation of characteristic nanoclusters. By immersing a circobiphenyl-coated Au(111) substrate in a 0.1 mM aqueous AuBr4 – solution, AuBr4 – was spontaneously reduced, and a characteristic mixed adlayer consisting of circobiphenyl molecules and Br– ions with monatomic Au islands was produced on the Au(111) surface. A similar electrodeposition process was performed in an aqueous solution of PtBr4 2–, and an identical mixed adlayer was obtained with Pt nanoclusters. The electrodeposition of Au and Pt complexes was facilitated by the “negatively charged” reconstructed Au(111) surface, which is stabilized by the formation of a highly ordered circobiphenyl adlayer. EC-STM revealed the formation of characteristic dimers of Pt clusters ranging 2–4 nm in diameter on the circobiphenyl adlayer. Thus, Br– metal complexes were found to play an important role in controlling the structure and size of a mixed adlayer containing Br– and the shape of Pt clusters.

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Section: Introductionsupporting

confidence: 58%

Tuning of 2D Nanographene Adlayers on Au(111) by Electrodeposition of Metal Halide Complexes

Ogata¹

2019

ACS Appl. Mater. Interfaces

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“…11,12 In fact, a similar coadsorption was observed at the coronene adlayer on Au(111) in 0.1 M HClO 4 containing KI. 23 Note that an adlayer consisting of coronene and small spots was found on the Au islands, indicating that the deposited Au atoms aggregated and formed islands under the mixed molecular adlayer, not on the coronene adlayer. The unit cell of the adlattice is superimposed in the model structure shown in Fig.…”

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confidence: 99%

Spontaneous electrodeposition of gold and platinum complexes through a coronene adlayer on Au(111)

Ogata

Nishiyama

2013

Dalton Trans.

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Two-Dimensional Macromolecular Architectures Constructed at Interfaces by Soft Solution Processes

Kunitake¹,

Uemura²

2018

Encyclopedia of Interfacial Chemistry

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Coronene-Iodine Coadsorbed Adlayers on Au(111) Surfaces Promoted by Electrochemical Potential Control

Abstract: A coronene and iodine co-adsorbed adlayer on an Au(111) surface in which iodine atoms surrounded each coronene molecule was found by an in situ scanning tunneling microscopy (STM) study with electrochemical potential control.

Cited by 5 publications

References 14 publications

Tuning of 2D Nanographene Adlayers on Au(111) by Electrodeposition of Metal Halide Complexes

Tuning of 2D Nanographene Adlayers on Au(111) by Electrodeposition of Metal Halide Complexes

Spontaneous electrodeposition of gold and platinum complexes through a coronene adlayer on Au(111)

Two-Dimensional Macromolecular Architectures Constructed at Interfaces by Soft Solution Processes

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