Photoconversion of a Redox‐Active Self‐Assembled Monolayer: In Situ Probing of Photoinduced CO Dissociation from a Triruthenium Cluster Center on Gold

Abstract

Photoempfindliche selbstorganisierte Monoschichten (self‐assembled monolayers, SAMs): Die erste durch Bestrahlung ausgelöste Umwandlung eines redoxaktiven molekularen Films gelang durch photochemische Anregung eines Ru3‐Clusters mit CO‐Liganden auf einer Au(111)‐Elektrode. Dissoziation von CO führt sauber zu einer H2O‐terminierten SAM (siehe Bild).

Construction of SnIV Porphyrin/Trinuclear Ruthenium Cluster Dyads Linked by Pyridine Carboxylates: Photoinduced Electron Transfer in the Marcus Inverted Region

“…[20][21][22] These ruthenium clusters have previously been investigated in terms of their multistep and reversible redox behavior and their application to photoconversion of a surface-bound self-assembled monolayers on gold elec-A C H T U N G T R E N N U N G trodes. [23] meso-Pyridine-coordinated trinuclear ruthenium clusters have been prepared [24] and intermolecular photoinduced electron transfer from Zn-porphyrin complexes to triruthenium clusters have been examined. [25] However, examples have not been reported, which demonstrate intramolecular photoinduced electron transfer of donor-acceptor dyads consisting of porphyrin compounds and metal clusters to give a charge-separated state.…”

“…As the electron acceptor, μ 3 ‐oxo‐centered and carboxylato‐bridged trinuclear ruthenium clusters, [Ru 3 (μ 3 ‐O){OC(O)R} 6 L 3 ] n + (R=general substituent), were used due to their small structural change in the course of redox reactions for smaller reorganization energies 20–22. These ruthenium clusters have previously been investigated in terms of their multistep and reversible redox behavior and their application to photoconversion of a surface‐bound self‐assembled monolayers on gold electrodes 23. m eso ‐Pyridine‐coordinated trinuclear ruthenium clusters have been prepared24 and intermolecular photoinduced electron transfer from Zn–porphyrin complexes to triruthenium clusters have been examined 25.…”

Effects of alkyl chain number and position on 2D self-assemblies

“…[1][2][3][4][5][6][7] Owing to their precise chemical structures and physical properties, P-conjugated molecules are usually adopted as targets for constructing well-dened assemblies, which play a crucial role in the development of molecular electronic devices. [8][9][10][11][12] Therefore, an efficient strategy for constructing and tuning molecular packing in assembly systems is indispensable for the further development of nanoscience and nanotechnology.…”

Proton-Coupled Electron Transfer and Lewis Acid Recognition at Self-Assembled Monolayers of an Oxo-Bridged Diruthenium(III) Complex Functionalized with Two Disulfide Anchors

“…In recent years, self-assembled monolayers (SAMs) of functional transition-metal complexes have been extensively developed in an interdisciplinary field of research covering both coordination chemistry and surface chemistry. − In particular, redox-active transition-metal complexes are regarded as excellent molecular modules for head groups of SAMs with controllable and switchable characters at electrochemical interfaces whose properties can be tuned by external stimuli such as light, solvent polarity, ligand exchange, and solution pH. − A well-defined chemistry of Au–S linkage has been widely used to confine molecules as SAMs on Au surfaces. − Those SAMs comprising functional coordination compounds organized on electrode surfaces in a well-defined manner can be ultimately utilized for molecular sensing and electronic materials. , …”