Micromolded Carbon Paste Microelectrodes for Electrogenerated Chemiluminescent Detection on Microfluidic Devices.

ABSTRACT: Micromolded carbon paste electrodes are easily fabricated, disposable, and can be integrated into microfluidic devices to fabricate inexpensive sensors and biosensors. In this work, carbon paste microelectrodes were fabricated in poly(dimethylsiloxane) using micromolding techniques and were coupled to a microfluidic channel to fabricate electrogenerated chemiluminescent (ECL) sensors. ECL was generated using both the tris(2,2'-bipyridyl)ruthenium(II)-tripropylamine system and the hydrogen peroxide and luminol system. For each of these ECL systems, the sensor fabrication method was optimized, along with key experimental parameters (applied voltage, solution flow rate, buffer species and luminol concentration). The limit of detection (S/N = 3) for TPrA was ~2.4 μM with a linear range of 10-1

SUBMITTER: Gross EM 

PROVIDER: S-EPMC7853645 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature