A new reflection–transmission bidimensional spectroelectrochemistry cell: Electrically controlled release of chemicals from a conducting polymer

Orcajo, Oscar; Ventosa, Edgar; Martínez, Alberto del Monte; Colina, Álvaro; Heras, Aránzazu; Ruiz, Virginia; López-Palacios, Jesús

doi:10.1016/j.jelechem.2006.07.026

Cited by 15 publications

(20 citation statements)

References 31 publications

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“…In order to improve the sensitivity and to avoid the need to use OTEs, the external reflection mode was proposed . In a near‐normal reflection mode , the diffusion layer is sampled twice by the light beam, which involves an increase in the sensitivity. As in the previous case, information about the solution and the electrode surface is obtained.…”

Section: Howmentioning

confidence: 99%

“…This configuration was not very popular at the initial stages of SEC because it was not very easy to reflect a light beam on the electrode surface. However, by using reflection probes based on optical fibers and modular spectrometers, the optical setups of these experiments became much simpler than some years before. In this configuration, almost any material can be used as working electrode.…”

Section: Howmentioning

confidence: 99%

“…In this configuration, almost any material can be used as working electrode. Gold , platinum , mercury and antimonium tin oxide have been used as electrode material in a similar way to electrochemistry experiments. Carbon can also be used as working electrode .…”

Section: Howmentioning

confidence: 99%

“…This advantage has also been scarcely used in literature. Some examples can be found in which the optical signal is much more sensitive than the electrochemical one because of the high capacitive current . Moreover, this interesting property of SEC experiments has almost not been used to study the capacitive currents during the electrochemical process.…”

Section: Whymentioning

confidence: 99%

“…For this reason, a number of papers employ model molecules to demonstrate the capabilities of the technique. Ferro/ferricyanide , o ‐tolidine , ruthenium bipyridine complexes or ferrocenemethanol are molecules widely studied and used for UV/Vis‐SEC. Most advantages of UV/Vis‐SEC were proven using these compounds, but the advantages of this technique in quantitative analysis were scarcely demonstrated .…”

Section: Whymentioning

confidence: 99%

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Spectroelectrochemical Sensing: Current Trends and Challenges

et al. 2019

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Spectroelectrochemistry (SEC) has been used for more than 50 years, but this set of techniques has not been widely used for quantitative analysis. For many years, no commercial instruments were available, which made very difficult to spread the use of SEC. Nowadays, only the creativity of the researchers is required to exploit the capabilities of SEC. This review is written with the aim of showing the potential of SEC, mainly for analytical chemistry. Here, we explain what SEC is, how analytical responses can be obtained, why these techniques are useful for sensors, with a brief description of its advantages in use, and, finally, we try to show the challenges that must be addressed in the next years. SEC can resolve interesting analytical problems using the high amount of data provided by this intrinsic trilinear technique. Given the quantitative analysis point of view of this review, the discussion of the SEC techniques is focused on UV/Vis absorption, photoluminescence and Raman SEC.

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Section: Howmentioning

confidence: 99%

Section: Howmentioning

confidence: 99%