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Spectroelectrochemistry couples the techniques of electrochemistry and spectroscopy. It involves the application of an electric field to a sample whilst simultaneously recording spectroscopic
absorption features, and has particular application for monitoring redox-coupled reactions to allow in-situ spectroscopic analysis of electro-generated intermediatesand/or products.
The Specac Spectroelectrochemical transmission cell is an FTIR accessory encompassing a thin-layer optically-transparent electrode structure to facilitate electrochemicalspectroscopic measurements.
The cell comprises two CaF2 windows separated by a 100 or 200 micron sample layer, where gold grid working and counter electrodes, and a silver reference electrode, are photolithographically imprinted on the surface of the front window in contact with the sample. Grid structures with a period of 20 lines/mm are available as standard. Perfluoroelastomer seals are used to ensure chemical compatibility with a range of organic solvents, and the demountable cell design allows for ease of cleaning. The cell is air-tight, has a small sample volume (ca 0.3 – 0.6 ml), and can be used in an evacuated environment.
Specac’s Spectroelectrochemical transmission cell follows a modular design concept to fit with a range of Specac sample holders. In particular, the cell is compatible with Specac’s Standard Cell Holder, Variable Temperature Cell Holder, Water- Heating/Cooling jacket, and Electrical Heating jacket, to allow Spectroelectrochemical transmission measurements from – 50°C to 70°C.
Key Features & Benefits
- Demountable cell design for ease of cleaning
- Modular design to fit a range of sample holders to facilitate operation from -50°C to 70°C
- Gold working and counterelectrodes imprinted on cell window
- Perfluoroelastomer seals to ensure compatibility with a range of solvents
- Calcium fluoride windows for UV and IR applications
- 100 and 200 micron optical pathlengths
Ordering Information
| GS20900 | Spectroelectrochemical Transmission Cell |
| (Note: This cell includes both 100 micron and 200micron spacer options, and is shipped configured at 200 microns ) |
|
| Cell Holders (one required) | |
| GS20740 | Sample Cell ambient temperature holder with 3"x 2" backplate mount |
| GS20710 | Water Heating Jacket |
| GS20730 | Electrically Heated Jacket + temperature controller* |
| GS21525 | Variable Temperature Cell holder + temperature controller** |
| (Notes: *specify country; **Includes NaCl windows (pair) for jacket; must specify country for controller power cables and spectrometer for baseplate) | |
| Associated and replacement parts | |
| GS20907 | Pair of external perfluoroelastomer seals |
| GS20908 | Pair of internal perfluoroelastomer seals |
| GS20909 | Rear CaF2 window |
| GS20910 | Front CaF2 window (with electrode) |
| GS20080 | Variable Temperature Cell Holder flow fittings kit |
| GS20200 | Variable Temperature Cell Holder spare thermocouple (T-type Copper/CopperNickel) |
| GS20802 | Variable Temperature Cell Holder replacement CaF2windows (pair) for jacket |
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