Thin-layer cyclic voltammetric studies electron transfer across liquid/liquid interface

Abstract

KEYWORDSThin layer cycle voltammetry is one of the most efficient methods to investigate liquid/liquid interface. The advantages of this approach lie on its simplicity and effectiveness. The paper represents the progress that has been made in experiments and theories, analyzing the factors that affect rate constants and discussing how to get steady-state currents.

Biomimetic Interfacial Electron-Induced Electrochemiluminesence

“…Subsequently, 5.0 mM ferrocene (Fc) was dissolved into the organic layer and underwent redox at the rGCE surface (blue trace in Figure 1a), which demonstrates that the conductance of the organic thin layer is adequate to sustain the flow of significant electrochemical currents. 26,27 Chemical and Electrochemical Properties of H 2 TPP. The NMR spectra of the as-synthesized H 2 TPP is shown in Supporting Information Figure S1, with the following chemical shift values (ppm): δ −2.77 (s, 2H, -NH), 8.84 (s, 8H, pyrrole-H), 8.21−8.23 (t, 8H, aromatic-H), 7.73−7.79 (m, 12H, aromatic-H).…”

“…The shape of the green trace basically remains unchanged after continual scanning for 800 s (Figure b), indicating that the organic thin layer, adsorbed on the surface of the electrode, is not detached and the IEIECL system is sufficiently stable. Subsequently, 5.0 mM ferrocene (Fc) was dissolved into the organic layer and underwent redox at the rGCE surface (blue trace in Figure a), which demonstrates that the conductance of the organic thin layer is adequate to sustain the flow of significant electrochemical currents. , …”

“…On the other side, the electronic exchange between H 2 TPP in organic solution and electroactive substances in aqueous solution is permitted, which has been highlighted previously by our group. 27,32 ECL Mechanism of H 2 TPP in Single DCM. Experiments should first be carried out in single DCM to explore the ECL mechanism of H 2 TPP.…”

Unique Intramolecular Electronic Communications in Mono-ferrocenylpyrimidine Derivatives: Correlation between Redox Properties and Structural Nature

“…As a relatively new method to study redox processes at liquidliquid interfaces, thin-film electrochemistry has enjoyed a tremendous popularity lately [1,2]. By imposing an organic thin film between the bulk aqueous electrolyte and the hydrophobic electrode (e.g., graphite), the "thin-layer" approach originally proposed by Shi and Anson [3] provides an alternative method to study liquid/liquid interfacial electron transfer and mass transport processes.…”

Participation in Self-Emulsification by Oil-Thin Film Voltammetry

“…Various applications have been reported in the light of electron transfer mechanisms (Zhang, Barker, & Unwin, 2000;Sun et al, 2003;Liu et al, 2005;Xu et al, 2004;Solomont & Bard, 1995;Wang et al, 2003;Li et al, 2006;Michael et al, 2008;Quentel et al, 2007). The recent progress, the theory, the data analysis and applications have been reviewed (Lu et al, 2011), especially emphasizing electron transfer rates.…”