Ring any bells? The differential capacitance curve of Au(100) in neat [BMI]BF(4) (BMI = 1-butyl-3-methylimidazolium) ionic liquid has a bell-shaped feature (see picture). adsorption BMI(+) shows disorder-order transition and depends on the structure surface. Ordered micelle-like stabilizes underlying Au

A new and efficient approach using cleaving of trimethylsilyl groups to create covalent Au–C anchoring sites has been developed for single-molecule junction conductance measurements. Employing the mechanically controllable break (MCBJ) technique in liquid, we demonstrate formation highly conducting single molecular junctions several OPE derivatives. The created are stable exhibit conductances around one order magnitude higher than those their dithiol analogues. Extended assembly reaction...

The electrochemical reduction of CO(2) has been extensively studied over the past decades. Nevertheless, this topic tackled so far only by using a very fundamental approach and mostly trying to improve kinetics selectivities toward specific products in half-cell configurations liquid-based electrolytes. main drawback is that, due low solubility water, maximum current which could be drawn falls range 0.01-0.02 A cm(-2). This at least an order magnitude lower density than requirement make...

Experiments using a mechanically controlled break junction and calculations based on density functional theory demonstrate new magic ratio rule (MRR) that captures the contribution of connectivity to electrical conductance graphene-like aromatic molecules. When one electrode is connected site i other i′ particular molecule, we assign molecule "magic integer" Mii′. Two molecules with same core but different pairs connection sites (i,i′ j,j′, respectively) possess integers Mii′ Mjj′. On basis...

In situ gap-mode Raman spectra were acquired in an electrochemical environment on a single-crystal gold electrode employing Au(100)|4,4'-biphenyldithiol (BPDT)|Au-NP(55 nm) sandwich assembly. This geometry enabled investigation of the influence applied gate field conformational changes nanojunctions, such as torsion angle (φ) molecules. A linear correlation between intensity ratio I(C═C)/I(C(ring)-S) and cos(2) φ 4,4'-BPDT-type molecular junctions was established subsequently utilized to...

A new strategy for the development of a compactly fused tetrathiafulvalene (TTF)-based sensitizer is reported, leading to best performance date TTF-sensitized solar cells.

Abstract Oberflächlich betrachtet: Die differenzielle Kapazität von Au(100) in der ionischen Flüssigkeit [BMI]BF 4 (BMI=1‐Butyl‐3‐methylimidazolium) als Funktion des elektrostatischen Potentials nimmt einen glockenförmigen Verlauf (siehe Bild). Adsorption BMI + geht einem ungeordneten geordneten Prozess über und hängt Struktur Oberfläche ab. geordnete zu einer micellartigen stabilisiert die darunter befindliche Au‐Oberfläche. magnified image

We have studied Au(55 nm)@SiO2 nanoparticles (NPs) on two low-index phases of gold and platinum single crystal electrodes in ClO4(-) SO4(2-) ion-containing electrolytes by both electrochemical methods in-situ shell-isolated nanoparticle enhanced Raman spectroscopy (SHINERS). showed the blocking electrode with surfactants originating from synthesis as-prepared SHINERS NPs. introduce an efficient procedure to overcome this problem, which provides a fundamental platform for application surface...

Abstract We studied charge transport through core‐substituted naphthalenediimide (NDI) single‐molecule junctions using the electrochemical STM‐based break‐junction technique in combination with DFT calculations. Conductance switching among three well‐defined states was demonstrated by electrochemically controlling redox state of pendent diimide unit molecule an ionic liquid. The electrical conductances dianion and neutral differ more than one order magnitude. potential‐dependence...

Abstract Tuning charge transport at the single‐molecule level plays a crucial role in construction of molecular electronic devices. Introduced herein is promising and operationally simple approach to tune two distinct charge‐transport pathways through cruciform molecule. Upon situ cleavage triisopropylsilyl groups, complete conversion from one junction type another achieved with conductance increase by more than order magnitude, it consistent predictions ab initio calculations. Although...

Room-temperature ionic liquids (RTILs) are promising new electrolytes for efficient carbon dioxide reduction. However, due to their high viscosity, the mass transport of CO2 in RTILs is typically slow, at least one order magnitude slower than aqueous systems. One possibility improve decrease viscosity through dilution with water. Herein, defined amounts water added 1-butyl-3methylimidazolium tetrafluoroborate ([BMIm][BF4 ]), which a hydrophilic RTIL. Electrochemical measurements on quiescent...

Rationale: Since the advent of immunotherapy in clinical practice, it has profoundly transformed paradigm cancer treatment and been rapidly adopted settings. Concurrently, combination with anti-angiogenic therapy shown great promise research. The inevitable joint application brings about a greater number adverse reactions. These reactions are often perplexing, uncertainty whether they stem from immunotherapy, therapy, or both. This is case report occurring when immune drugs anti-vascular...

The single molecule conductance of a conjugated molecular wire is electrochemically switched upon oxidising or reducing central bispyrrolotetrathiafulvalene unit.

Abstract Graphene is a promising candidate for an ideal membrane material. Its ultralow (one‐atomic) thickness potentially provides high permeation and at the same time selectivity. Here, it shown that these properties can be used to create confined, two‐dimensional electrochemical environment between graphene layer single‐crystal Pt(111) surface. The well‐defined fingerprint voltammetric characteristics of provide immediate information about penetration intercalation ions into confined...

Interface engineering to attain a uniform and compact self-assembled monolayer at atomically flat surfaces plays crucial role in the bottom-up fabrication of organic molecular devices. Here we report promising operationally simple approach for modification/functionalization not only ultraflat single-crystal metal surfaces, M(111) (M=Au, Pt, Pd, Rh Ir) but also highly oriented pyrolytic graphite surface, upon efficient situ cleavage trimethylsilyl end groups molecules. The obtained monolayers...

A new family of cyclic antimicrobial peptides is reported targeting multidrug resistant<italic>Pseudomonas aeruginosa</italic>by membrane disruption.

Golden contest: CO2 electroreduction in room-temperature ionic liquids is highly sensitive towards the gold electrode surface structure. An Au(110) by far most active among low-index Au(hkl) facets irrespective of chemical nature IL used as electrolyte.The activity single crystal electrodes (CO2RR) was examined for eight room temperature (ILs) means cyclic voltammetry. We demonstrate that CO2RR structure, with being electrolyte. The all three surfaces decreases upon multiple potential...

A redox-active ionic liquid (IL), 1-butyl-1′-heptyl-4,4′-bipyridinium bis(trifluoromethanesulfonyl)imide, has been synthesized and its transport processes were investigated. The conductivity viscosity of the IL, as well diffusion coefficients components studied over a 50 °C wide temperature range: for diffusivity studies, both pulsed-gradient spin–echo (PGSE)–NMR technique voltammetric measurements have applied. measured data are presented in paper compared to each other. It was found that...

The forces required for the detachment of ferrocene (Fc) from β-cyclodextrin (βCD) in a single host (βCD)-guest complex were investigated using force spectroscopy under electrochemical conditions. redox state guest Fc moiety as well structure supporting matrix was found to decisively affect nanomechanical properties complex.

As revealed for the first time by in situscanning tunnelling spectroscopy (STS), ferrocene-modified Si(111) substrates show ambipolar field effect transistor (FET) behaviour upon electrolyte gating.

The bioelectrocatalytic (oxygen reduction reaction, ORR) properties of the multicopper oxidase CueO immobilized on gold electrodes were investigated. Macroscopic electrochemical techniques combined with in situ scanning tunneling microscopy (STM) and surface-enhanced Raman spectroscopy at ensemble single-molecule level. Self-assembled monolayer mercaptopropionic acid, cysteamine, p-aminothiophenol chosen as redox mediators. highest ORR activity was observed for protein attached to...

A protected S-acetylthio porphyrin was synthesized and attached to the Au38(2-phenylethanethiolate)24 cluster in a ligand exchange reaction. Chiral high performance liquid chromatography of functionalized yielded enantiomeric pairs clusters probably differing binding site porphyrin. As proven by circular dichroism, chirality maintained. Exciton coupling between chromophore is observed. Zinc can be incorporated into cluster, as evidenced absorption fluorescence spectroscopy, however, reaction...