#Opus bruker software#

For the study of the dissolved metal complex the solution was measured using a silicon hemispherical window (F530-8) in the ATR mode with the working electrode placed 1 mm above the window. Investigations were performed on a 20 mmol/l solution of potassium ferrocyanide K 4 in water and additional 1 mol/l potassium chloride KCl as supporting electrolyte. A thin gold plate disk was used as working electrode, and silver and platin wires as quasi-reference and counter electrodes.

#Opus bruker software#

The experiments were controlled by the FT-IR spectrometer using a software script and a connection with the CAN-ADI board to a Gamry 600 reference potentiostat. A MIR polarizer was installed and p-polarized light was used for the investigations. The measurement parameters were 4 cm -1 resolution and 100 scans. A representation of the reflection cell A530/P as used in the experiment is depicted in figure 2, showing the installation of the different components, a glass body and electrodes. The experiments were conducted with a purged VERTEX FT-IR spectrometer equipped with the A530/P accessory and a mid-band MCT detector. Additionally we will determine the layer thickness within the external reflection mode. This system is also discussed in detail in the literature.

In this application example we will study the oxidation of ferrocyanide 4- and the dependance of the CN вЂ“ ligand stretching vibration on the oxidation state of the iron center (Fe II or Fe III). Therefore the molecules can be studied directly in the vicinity of the electrode surface with transmission measurements. Therein the working electrode consist of a semi-transparent metal minigrid. Alternatively an internal reflection ATR set-up can be used to analyze the electrode surface directly with limited influence of the electrolyte (see figure 1).ДЇurthermore for the IR spectroelectrochemical investigation of dissolved molecules in solution Optically Transparent Thin Layer Electrochemical Cells (OTTLE) are also well known for transmission measurements. For an external IR reflection-absorbance spectroscopy (IRRAS) set-up a thin layer configuration is used which allows the study of the electrolyte and the electrode surface. With the BRUKER A530/x reflection unit prepared for electrochemical cells the opportunity is given to study both. This valuable method can be applied for investigations of electrolytes or of electrode surfaces. The combination of FT-IR spectroscopy with electrochemistry offers insight in the molecular change and the reaction process of the studied molecules in addition to the electrochemical response of the experiment.

For example of the redox-active center in biomolecules, the reaction behavior of catalysts or the formation of carbon oxides during alcohol oxidation. Therefore studies of electrolyte systems or electrode surfaces are of great importance for possible further improvements.ДЄlso in other fields, like biochemistry or catalysis, electrochemistry is of great benefit to get access to information of molecules, depending on an applied electrochemical potential. A future requirement to face this trend is the development of high capacity and as well low weight rechargeable batteries for energy storage. In recent times advancement in technology and industry results in a world-wide increasing energy consumption. Electrochemical investigations are a very current topic in research.