TY - JOUR
T1 - Coupled triple phase boundary processes
T2 - Liquid-liquid generator-collector electrodes
AU - Vagin, Mikhail Yu
AU - Karyakin, Arkady A.
AU - Vuorema, Anne
AU - Sillanpää, Mika
AU - Meadows, Helen
AU - Campo, F. Javier Del
AU - Cortina-Puig, Montserrat
AU - Page, Philip C.Bulman
AU - Chan, Yohan
AU - Marken, Frank
PY - 2010/3
Y1 - 2010/3
N2 - Electrochemical processes at liquid-liquid-electrode interfaces involve simultaneous ion transfer and electron transfer. When driven at triple phase boundary electrode systems, electron and ion transfer occur in the same interfacial reaction zone. In this report, preliminary work with a novel electrode system based on two coupled triple phase boundary reaction zones is described. An interdigitated gold band array with 7 μm gold bands separated by 13 μm gaps is employed immersed in aqueous electrolyte with a water-immiscible solution of the redox system N,N-diethyl-N′N′-didodecyl-phenylenediamine (DDPD) in 4-(3-phenylpropyl)-pyridine (PPP) immobilized on the surface. Well-defined generator-collector feedback currents are observed which depend on the volume of deposit, the concentration of the redox system, and the nature of the aqueous electrolyte.
AB - Electrochemical processes at liquid-liquid-electrode interfaces involve simultaneous ion transfer and electron transfer. When driven at triple phase boundary electrode systems, electron and ion transfer occur in the same interfacial reaction zone. In this report, preliminary work with a novel electrode system based on two coupled triple phase boundary reaction zones is described. An interdigitated gold band array with 7 μm gold bands separated by 13 μm gaps is employed immersed in aqueous electrolyte with a water-immiscible solution of the redox system N,N-diethyl-N′N′-didodecyl-phenylenediamine (DDPD) in 4-(3-phenylpropyl)-pyridine (PPP) immobilized on the surface. Well-defined generator-collector feedback currents are observed which depend on the volume of deposit, the concentration of the redox system, and the nature of the aqueous electrolyte.
KW - Feedback current
KW - Generator-collector
KW - Gold
KW - Interdigitated array
KW - Ion transfer
KW - Liquid-liquid interface
KW - Sensor
KW - Voltammetry
UR - http://www.scopus.com/inward/record.url?scp=76449084110&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2010.01.018
DO - 10.1016/j.elecom.2010.01.018
M3 - Article
AN - SCOPUS:76449084110
SN - 1388-2481
VL - 12
SP - 455
EP - 458
JO - Electrochemistry Communications
JF - Electrochemistry Communications
IS - 3
ER -