TECH FOCUS SPECTROELECTROCHEMISTRY Tech Focus sponsored by


AVANTES FEATURED PRODUCT


(QCMT/EQCMT) and Electrodes/ Accessories for EC measurement. Avantes has a wealth of experience in developing custom- designed systems for chemistry applications for researchers. The company’s instruments perform exceptionally well in spectroelectrochemistry applications due to the sophisticated electronics controls facilitated by its AS7010 (EVO) electronics and accompanying controlling software. BASi’s spectroelectrochemical


cell is the combination of a thin- layer electrochemical vessel and a quartz cuvette (two path lengths are available, 1mm and 0.5mm) designed to be used in a standard UV-VIS spectrometer. It allows the monitoring, in real time, of chromic changes associated with a reduction/oxidation reaction, including reactant, intermediate(s) and/or final products by spectroscopic means. The Vertex 80 and the


Vertex 80v vacuum FT-IR spectrometers from Brucker are used in spectroelectrochemistry applications. They are based on the actively aligned UltraScan interferometer, which provides peak spectral resolution. The Vertex 80v is an evacuated optics bench that can eliminate atmospheric moisture absorptions for ultimate sensitivity and stability, enabling demanding experiments such as high resolution, ultra-fast rapidscan, step-scan, or UV spectral range measurements. The Vertex 80/80v optics design allows peak flexibility and at the same time peak instrument performance. The Optics DigiTect technology prevents external signal disturbance, guarantees peak signal-to-noise ratio and allows easy and reproducible detector exchange by the instrument user. Gamry’s spectroelectrochemistry systems are the Spectro-115UTM


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(200 – 850nm), Spectro-115ETM (350 – 1,000nm) and i-Raman (532 or 785nm laser). Each system uses a miniature CCD spectrometer, USB 3.0 communication and temperature compensation. These fibre-based spectrometers can be easily configured for absorption or transmission. The UV-VIS systems interface with a deuterium/ tungsten light source that has a spectral output of 200 – >1100nm and can be configured to provide both D2 and W. The light source also includes a safety shutter. Gamry Instruments are available through distribution partner, B&W Tek. Hamamatsu mini-


spectrometers are compact and low cost spectrometers (polychromators). There are more than 20 types covering the spectral range, from UV to NIR. Suitable for applications such as environmental measurement, colour measurement, quality control in production lines, information devices and chemistry. The company’s FTIR engine has a Michelson optical interferometer and control circuit built into a palm-sized enclosure. Spectrum and absorbance can be measured by connecting a PC via USB. The FTIR engine will assist in creating portable, handheld FTIR spectrophotometers for analytical applications. Magnitude Instruments


develops and manufactures nanosecond, transient absorption spectrometers with high sensitivity and rapid data collection, enabling advances in chemistry, energy, electronics and biological research. Spectrometers have probe wavelength ranges spanning the UV to mid-IR. Metrohm provides instruments


and know-how for chemical analysis, including application support, lab and process solutions, service and training. Its range of products for


Chemical applications for spectroscopy are innumerable and increasing every day. Chemical reactions are dynamic processes that present unique challenges, ranging from temperature fluctuations to corrosive and caustic attributes, which require robust analytical techniques and tools. Monitoring chemical reactions in the food/ beverage, petroleum, semiconductor and chemical industry provide a valuable tool for quality control. Non-invasive and in-situ spectroscopy analysis facilitated by Avantes’ instruments and accessories provides real-time, high-speed measurements of chemical processes. A much-used spectrometer in chemistry applications is the


AvaSpec-ULS2048CL-EVO. Using CMOS instead of the conventional CCD technology, this spectrometer is ready for the future. Besides the high-speed communication options, the instrument offers a fast microprocessor and 50 times more memory capacity to store more spectra onboard and realise more functionality. Options include a detector collection lens to enhance sensitivity in the 200-1100 nm range, a wide range of slit sizes, gratings and fibre-optic entrance connectors. It comes complete with AvaSoft-Basic software, a USB cable and an extensive manual.


Find out more at: www.avantes.com/products/spectrometers/starline/avaspec- uls2048cl-evo


spectroelectrochemistry include instruments for Raman, UV-VIS and NIR spectroelectrochemistry. It also offers spectroelectrochemistry cells and accessories. The company’s DropView Spelec software is designed to control the equipment, allowing for experiment synchronisation and high-performance of data treatment, including functions such as combined experimental control, real-time spectra display, advanced file handling of electrochemical and optical measurements. Pine Research Instrumentation specialises in electrochemical research instrumentation. The company’s integrated UV-VIS


spectroelectrochemical system allows the control of a potentiostat and spectrometer from a single software application to ensure proper timing integration, seamless operation and ease of use. Its AfterMath software interfaces to the Avantes fibre-optic based AvaSpec-ULS2048-EVO UV/Vis spectrometer. The kit includes: spectroscopy instrumentation in the AvaSpec-ULS2048-EVO UV/ Vis spectrometer; Pine Research’s own spectroelectrochemical cell with a patterned ‘honeycomb’ electrode that mounts easily inside a thin-layer quartz cuvette; and electrochemical instrumentation in the WaveNow or WaveDriver series potentiostat. EO


May 2022 Electro Optics 33


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