Spectroelectrochemistry
Spectroelectrochemistry (SEC) is a set of multi-response analytical techniques in which complementary chemical information (electrochemical and spectroscopic) is obtained in a single experiment. Spectroelectrochemistry provides a whole vision of the phenomena that take place in the electrode process. The first spectroelectrochemical experiment was carried out by Kuwana in 1964.

The main objective of spectroelectrochemical experiments is to obtain simultaneous, time-resolved and in-situ electrochemical and spectroscopic information on reactions taking place on the electrode surface. The base of the technique consist in studying the interaction of a beam of electromagnetic radiation with the compounds involved in these reactions. The changes of the optical and electrical signal allow us to understand the evolution of the electrode process. 

The techniques on which the spectroelectrochemistry is based are:

*Electrochemistry, which studies the interaction between electrical energy and chemical changes. This technique allows us to analyse reactions that involve electron transfer processes (redox reactions).

*Spectroscopy, which studies the interaction between electromagnetic radiation and matter (absorption, dispersion or emission).

Spectroelectrochemistry provides molecular, thermodynamic and kinetic information of reagents, products and/or intermediates involved in the electron transfer process.

= Classification of spectroelectrochemical techniques =

There are different spectroelectrochemical techniques based on the combination of spectroscopic and electrochemical techniques. Regarding electrochemistry, the most common techniques used are:

*Chronoamperometry, which measures current intensity as a function of time by applying a constant difference of potential to the working electrode.

*Chronopotentiometry, which measures the difference of potential as a function of time by applying a constant current.

*Voltammetry, which measures the change of current as a function of the linear change of the working electrode potential.

*Pulse techniques, which measure the change of current as a function of difference of potential, applying pulse potential functions to the working electrode.

The general classification of the spectroelectrochemical techniques is based on the spectroscopic technique chosen.
Q7877
electrochemical
Concept
Q483666
spectroscopic
Concept
Q2652
1964
TIME
Q7877
electrochemical
Concept
Q483666
spectroscopic
Concept
Q12969754
electromagnetic radiation
Concept
Q7877
Electrochemistry
Concept
Q82682
redox
Concept
Q483666
Spectroscopy
Concept
Q12969754
electromagnetic radiation
Concept
Q11473
thermodynamic
Concept
Q46276
kinetic
Concept
Q3698481
Chronoamperometry
UNK
Q1669557
Chronopotentiometry
Concept
Q904093
Voltammetry
Concept
Q96212237
Spectroelectrochemistry
UNK
Q96212237
Spectroelectrochemistry
UNK
Q96212237
Spectroelectrochemistry
UNK
1964-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1964
DATE
point in time