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Electrochemiluminescence at a Microelectrode in a Microscale Fluidic System
Author(s) -
Horiuchi Tsutomu,
Niwa Osamu,
Hatakenaka Noriyuki
Publication year - 2000
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200005)12:9<672::aid-elan672>3.0.co;2-o
Subject(s) - microscale chemistry , electrochemiluminescence , microelectrode , fluidics , electrode , laminar flow , layer (electronics) , materials science , analytical chemistry (journal) , optoelectronics , nanotechnology , chemistry , chromatography , mechanics , physics , electrical engineering , mathematics education , mathematics , engineering
We describe the real‐time visualization of electrochemiluminescence (ECL) in a microscale region using an interdigitated array electrode (IDA) in a thin layer flow cell. We studied the ECL reaction, which is based on the annihilation of cations and anions of 9,10‐diphenylanthracene at the IDA, from the spatial and temporal emission patterns in the thin layer. We observed that the ECL emission region moved from the root of the band array to its center and the emission time was limited when the dye solution was static. We found that two kinds of microscale‐width solution stream formed spontaneously and were arranged alternately when the solution was under the laminar flow conditions at a specific flow rate. The two streams were composed of different radical components.