Nanoscale Electrochemical Surface Science on Molecular Assembly and Surface Function

YOSHIMOTO, Soichiro

doi:10.5796/electrochemistry.23-00067

Cited by 3 publications

(2 citation statements)

References 83 publications

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“…In addition to the intrinsic characteristics of FHC molecules, their spatial structures in fabricated films can influence the mobility of charge carriers and the photo efficiencies of solar cells. In situ scanning tunneling microscopy (STM) is a powerful tool to study molecular adsorption on a metal substrate. − FHC molecules including 3,4-ethylenedioxythiophene, , terthiophene (TT), thienothiophene (DTT), 2,3-diphenyl-5,7-di(thiophen-2-yl)thieno[3,4- b ]pyrazine (DPDTTP), 3′,4′-bis(hexylthio)-2,2′:5′,2″-terthiophene (DTDST) have been examined by STM …”

Section: Introductionmentioning

confidence: 99%

Scanning Tunneling Microscopy Examination of Molecules with Fused Thiophene and Pyrrole Groups Adsorbed on the Electrified Au(111) Interface

Balasaravanan,

Hsieh,

Jhou

et al. 2024

J. Phys. Chem. C

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Molecules with a fused pyrrole and thiophene backbone can be harnessed into organic semiconductors and optoelectronics devices. Closely related to these applications is contact with a frequently used gold electrode. This organic/metal interface has been examined with scanning tunneling microscopy (STM) at the molecular level, revealing the adsorption orientation and spatial structure of the Au(111) electrode. The current study focused on the adsorption of 1,4-bis(4H-dithieno[3,2-b:2′,3′-d]pyrrol-4-yl)benzene (BDTP) on an ordered Au(111) electrode. The BDTP adlayer was adsorbed onto a Au crystal by immersion in 0.01 mM BDTP/benzene dosing solution for 2 min after the Au electrode was pretreated with the annealing-and-quenching process. The STM experiment was performed in 0.1 M HClO 4 or H 2 SO 4 under potential control. The cyclic voltammetric results indicate that the BDTP adlayer was stable between −0.2 and 0.7 V (versus Ag/AgCl) in both acids before desorption and oxidation commenced at negative and positive potentials. High-quality STM imaging was achieved to provide insights into the interactions between BDTP admolecules and with the Au support. The van der Waals interaction between BDTP and Au(111) was strong enough to partially lift the Au(111)-(√3 × 22) reconstructed phase. The threedimensional adsorption configuration of the BDTP admolecule on the Au(111) electrode is inferred from the corrugated features in the STM image. Potential control affected the interfacial interactions, the coadsorption of anions, and finally the spatial molecular arrangement on the Au electrode.

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Section: Introductionmentioning

confidence: 99%

Scanning Tunneling Microscopy Examination of Molecules with Fused Thiophene and Pyrrole Groups Adsorbed on the Electrified Au(111) Interface

Balasaravanan,

Hsieh,

Jhou

et al. 2024

J. Phys. Chem. C

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“…Scanning tunneling microscopy (STM) and atomic force microscopy (AFM) are powerful tools for understanding both 2D molecular assemblies and dynamics, such as assembly processes and molecular motions at the molecular scale. − To date, many reports and related reviews have been published on the characteristics of nanostructures and molecular assemblies of metal complexes, including metalloporphyrins, ,, metallophthalocyanines, ,,, 2D MOFs, ,− graphene nanoribbons (GNRs), , and supramolecularly assembled polymers such as catenanes on surfaces. Thus, the molecular architecture of functional molecules can be controlled not only in the gas phase but also in the liquid phase.…”

Section: Introductionmentioning

confidence: 99%

Solvent Effect for the Structural Control of Molecular Architectures Consisting of Trinuclear Ruthenium Clusters and Ligands at the HOPG Surface

Inoue,

Abe,

Yoshimoto

2024

Langmuir

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The molecular architecture of a triruthenium complex and 1,4-di(4-pyridyl)benzene on highly oriented pyrolytic graphite was investigated by drop-casting mixed tetrahydrofuran and methanol solutions. Atomic force microscopy revealed the formation of one-dimensional molecular wires on highly oriented pyrolytic graphite after heating the mixed tetrahydrofuran solution, whereas large ring structures were formed in the methanolic solution. It was found that the molecular architectures composed of triruthenium complexes and 1,4-di(4-pyridyl)benzene strongly depend not only on the temperature of the solution but also on the organic solvents. The formation of the molecular architecture was supported by the ultraviolet−visible absorption spectra of the mixed solution and the electrochemical responses of the deposited film.

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Recent Activities for Relaunch Process of Electrochemistry to Gold Open Access Journal and Introduction of Award Winners in 2023

MIZUHATA,

UEDA

2023

Electrochemistry

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Nanoscale Electrochemical Surface Science on Molecular Assembly and Surface Function

Cited by 3 publications

References 83 publications

Scanning Tunneling Microscopy Examination of Molecules with Fused Thiophene and Pyrrole Groups Adsorbed on the Electrified Au(111) Interface

Scanning Tunneling Microscopy Examination of Molecules with Fused Thiophene and Pyrrole Groups Adsorbed on the Electrified Au(111) Interface

Solvent Effect for the Structural Control of Molecular Architectures Consisting of Trinuclear Ruthenium Clusters and Ligands at the HOPG Surface

Recent Activities for Relaunch Process of Electrochemistry to Gold Open Access Journal and Introduction of Award Winners in 2023

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