Applications Spectroélectrochimie
La spectroélectrochimie est une méthode expérimentale qui combine l'électrochimie et la spectroscopie. Elle étudie le processus des réactions électrochimiques avec un contrôle optique simultané. La mesure spectroscopique fournit des informations complémentaires utiles lors d'une mesure électrochimique, telles que les intermédiaires de réaction ou les structures des produits.
Nos experts ont compilé plusieurs documents d'application sur les mesures spectroélectrochimiques. Utilisez les filtres pour rechercher les applications par analyte/paramètre, matrice d'échantillon ou industrie.
- AN-RA-009Comparison of SPELEC RAMAN and standard Raman microscopes
This Application Note compares SPELEC RAMAN and a standard Raman instrument by analyzing their performance in measuring single-walled carbon nanotubes (SWCNT).
- AN-FLU-002Understanding the mechanism of a bioassay indicator by fluorescence
Alamar Blue is monitored with fluorescence spectroelectrochemistry during its irreversible reduction to resorufin and further reversible reduction to dihydroresorufin.
- AN-EC-033Utilizing hyphenated EC-Raman to study a model system
This Application Note presents a walkthrough of an experiment on 4-nitrothiophenol using hyphenated EC-Raman, a combination of Raman spectroscopy and electrochemistry.
- AN-FLU-001Fluorescence spectroelectrochemistry of [Ru(bpy)3]2+/3+ in semi-infinite diffusion regime
In this Application Note, the Metrohm DropSens SPELEC instrument is used with the FLUORESCENCE KIT for time-resolved monitoring of electrochemical reactions in a semi-infinite diffusion regime by performing fluorescence spectroelectrochemistry of the [Ru(bpy)3]2+/3+ redox couple.
- AN-RA-005Characterization of single-walled carbon nanotubes by Raman spectroelectrochemistry
Spectroelectrochemistry is a multi-response technique that provides electrochemical and spectroscopic information about a chemical system in a single experiment, i.e., it offers information from two different points of view. Raman spectroelectrochemistry could be considered as one of the best techniques for both the characterization and behavioral understanding of carbon nanotube films, as it has traditionally been used to obtain information about their oxidation-reduction processes as well as the vibrational structure. This application note describes how the SPELEC RAMAN is used to characterize single-walled carbon nanotubes by studying their electrochemical doping in aqueous solution as well as to evaluate their defect density.
- AN-RA-004UV/VIS spectroelectrochemical monitoring of 4-nitrophenol degradation
Spectroelectrochemistry is a multi-response technique that provides both electrochemical and spectroscopic information about a chemical system in a single experiment, i.e., it offers information from two different points of view. Spectroelectrochemistry focused on the UV/VIS region is one of the most important combinations because this allows us to obtain not only valuable qualitative information, but also outstanding quantitative results. In this application note, the degradation kinetics for 4-nitrophenol, a known pollutant, were determined using SPELEC.
- AN-RA-003In situ, fast and sensitive: Electrochemical SERS with screen-printed electrodes
Substrates for surface-enhanced Raman spectroscopy (SERS) are typically fabricated with complex (micro/nano)structures of noble metals, enabling trace level detection of analytes. Due to the high costs and reactivity of these SERS substrates, they often have a limited shelf life. Development of new substrate materials which minimize these issues yet maintain the same performance standards is a constant concern.Screen-printed electrodes can be easily fabricated using different metallic materials with the well-established screen-printing method, leading to mass production of versatile, cost-effective, and disposable devices. In this Application Note, the feasibility of using readily-available screen-printed metal electrodes as suitable substrates for the fast and sensitive detection of different chemical species by in situ electrochemical SERS (EC-SERS) is shown.
- AN-RA-008Easy detection of enzymes with the electrochemical-SERS effect
Low sensitivity has limited the use of Raman spectroscopy as a detection method. However, the surface-enhanced Raman scattering (SERS) effect has improved its effectivity for analytical use. Aldehyde dehydrogenase (ALDH) and cytochrome c are analyzed by Raman spectroelectrochemistry as a proof of concept in this Application Note.
- AN-RS-042Revealing battery secrets with EC-Raman solutions
Electrochemical Raman (EC-Raman) spectroscopy enhances comprehension of energy storage devices by tracking physicochemical changes. This note details EC-Raman findings during nickel-metal hydride (NiMH) battery charge and discharge simulations.
- AN-SEC-004Spectroelectrochemical analysis of electrochromic materials
Poly(3,4-ethylenedioxythiophene) (PEDOT) is one of the most promising ICPs due to its high conductivity, electrochemical stability, catalytic properties, high insolubility in almost all common solvents and interesting electrochromic properties (transparent in the doped state and colored in the neutral state). In this Application Note, PEDOT film is evaluated by spectroelectrochemical techniques.
