Abstract
We have used three-dimensional (3D) printing technology to create an inexpensive spectroelectrochemical cell insert that fits inside a standard cuvette and can be used with any transmission spectrometer. The cell positions the working, counter, and reference electrodes and has an interior volume of approximately 200μl while simultaneously providing a full 1-cm path length for spectroscopic measurements. This method reduces the time required to perform a potentiometric titration on a molecule compared with standard chemical titration methods and achieves complete electrolysis of protein samples within minutes. Thus, the device combines the best aspects of thin-layer cells and standard potentiometry.
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