Micropipette as a tool for the determination of the ionic species limiting the potential window at liquid/liquid interfaces

Stewart, A.A.; Shao, Yuanhua; Pereira, Carlos M.; Girault, Hubert H.

doi:10.1016/0022-0728(91)85208-7

Cited by 76 publications

(44 citation statements)

References 5 publications

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“…To discriminate between these two possibilities a set of experiments using micropipettes was carried out since the micropipette methodology is recognised to be a powerful tool to discriminate what species cross the interface [28].…”

Section: Resultsmentioning

confidence: 99%

Ag+ transfer across the water/1,2-dichloroethane interface facilitated by complex formation with tetraphenylborate derivatives

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Pereira

Tomaszewski

et al. 2004

Electrochimica Acta

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The assisted transfer of silver ion, Ag + , by complexation of Ag + with the tetrakis(4-chlorophenyl)borate (TPBCl − ) anion was studied at the interface between two immiscible electrolyte solutions (ITIES).The elucidation of the interfacial mechanisms employed the cyclic voltammetry technique applied to macro and micro liquid/liquid interfaces. This procedure allowed to identify Ag + as the species which is transferred at the liquid/liquid interface and also the formation of an 1:2 metal:ligand complex when TPBCl − is in excess. The value for the formal transfer potential of silver(I) from aqueous to 1,2-dichloroethane was evaluated and the association constant for the [Ag(TPBCl) 2 ]− complex was determined.

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Section: Resultsmentioning

confidence: 99%

Ag+ transfer across the water/1,2-dichloroethane interface facilitated by complex formation with tetraphenylborate derivatives

Caçote

Pereira

Tomaszewski

et al. 2004

Electrochimica Acta

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“…If such is the case, then transport of the organic phase anion, within the organic phase, should be significant and testable. Based on previous reports of the ability of micropipette-based µITIES to be employed to identify which species is crossing the interface, based on voltammetric shapes, 59 Scanlon et al undertook a series of investigations of protein electrochemistry at arrays of µITIES. 60 Here, the organic phase was placed within the pores of a microporous silicon membrane.…”

Section: Mechanism Of Protein Electrochemistry At the Itiesmentioning

confidence: 99%

Voltammetry of proteins at liquid–liquid interfaces

Arrigan

2013

Annu. Rep. Prog. Chem., Sect. C: Phys. Chem.

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“…Systematic electrochemical treatment did not begin until the late 1970's when Koryta et al 103 demonstrated that the liquid/liquid interface lends itself to the same formalism as a solution/ metal interface and that similar, if not identical, experimental methodology could be used. This led soon to development of various electrochemical techniques to study the liquid/liquid interface, including, among others, studies of the solvent dropping interface [103][104][105][106][107][108] , and studies of cyclic voltammetry 108 , impedance measurements [109][110][111][112] , drop pressure method 113 , galvanostatic pulse method 114,115 , stripping voltammetry 114 , voltfluorometry [116][117][118][119] , and transport across a microinterface [120][121][122][123][124][125] . Electron transfer and photoinduced electron transfer have been also observed on ITIES or theoretically treated 19,84,86,87,[126][127][128][129][130][131][132][133] , as well as electrochemical catalysis 19,126,127,134,135 , adsorption …”

Section: When Nernstmentioning

confidence: 99%