Raman spectroelectrochemical study of Meldola blue, adsorbed and electropolymerized at a gold electrode

Raman spectroelectrochemical study of redox dye Nile blue adsorbed or electropolymerised at a gold electrode

“…2). In a common sense, this electropolymerisation process appears quite similar to that of other related azine type redox dyes like toluidine blue [16], neutral red [17], or Meldola blue [18].…”

“…As it could be expected, the spectra obtained appear rich in Raman features because of a high number of vibration modes for this structure. Previously, we obtained somewhat rich in features spectra for related structures like toluidine blue, neutral red and Meldola blue [16][17][18]. Obviously, all Raman bands observed present combined vibration modes which include many atoms and bonds between them.…”

“…For successfull applications of NB in different fields, a deep knowledge on its spectroelectrochemical properties appears an important prerequisite. In our preceding works, we performed detailed Raman spectroelectrochemical studies on related redox mediators used in electrochemical systems -toluidine blue [16], neutral red [17] and Meldola blue [18]. In order to broaden our studies to other redox mediators and dyes, in the present study we aimed at Raman spectroelectrochemical investigation of the redox dye Nile blue, adsorbed and electrochemically polymerised at a gold electrode.…”

Spectroelectrochemistry, the future of visualizing electrode processes by hyphenating electrochemistry with spectroscopic techniques

“…The cell moves together with the electrode in a linear path with respect to the Raman light source, reducing the time for which a single spot on the electrode is exposed to the Raman source. The linear moving electrode was first developed by Niaura et al 140 and is mostly used by Mažeikienė et al to study polyaniline, [141][142][143][144][145][146] dyes [147][148][149][150] and hexacyanoferrates. 151,152 3.2.1.3 Rotating electrodes and cells.…”

“…162,163,[184][185][186][187][188][189][190] Another popular application of Raman-SEC within material science is to get more insight on conductive polymers, studied by the group of Malinauskas [141][142][143][144][145][146]191 and others. [192][193][194][195][196][197][198][199][200][201][202] A number of applications are reported on the investigation of dyes, [147][148][149][150]203,204 small organic molecules that can form monolayers on the electrode material [205][206][207][208][209] and protein/cell studies. 140,[210][211][212] 3.2.2.2 Sensing applications and point of care.…”