PMID- 14710823 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20041005 LR - 20190717 IS - 0003-2700 (Print) IS - 0003-2700 (Linking) VI - 75 IP - 20 DP - 2003 Oct 15 TI - Microchip capillary electrophoresis with an integrated indium tin oxide electrode-based electrochemiluminescence detector. PG - 5435-40 AB - This paper describes an indium tin oxide (ITO) electrode-based Ru(bpy)3(2+) electrochemiluminecence (ECL) detector for a microchip capillary electrophoresis (CE). The microchip CE-ECL system described in this article consists of a poly(dimethylsiloxane) (PDMS) layer containing separation and injection channels and an electrode plate with an ITO electrode fabricated by a photolithographic method. The PDMS layer was reversibly bound to the ITO electrode plate, which greatly simplified the alignment of the separation channel with the working electrode and enhanced the photon-capturing efficiency. In our study, the high separation electric field had no significant influence on the ECL detector, and decouplers for isolating the separation electric field were not needed in the microchip CE-ECL system. The ITO electrodes employed in the experiments displayed good durability and stability in the analytical procedures. Proline was selected to perform the microchip device with a limit of detection of 1.2 microM (S/N = 3) and a linear range from 5 to 600 microM. FAU - Qiu, Haibo AU - Qiu H AD - State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. FAU - Yan, Jilin AU - Yan J FAU - Sun, Xiuhua AU - Sun X FAU - Liu, Jifeng AU - Liu J FAU - Cao, Weidong AU - Cao W FAU - Yang, Xiurong AU - Yang X FAU - Wang, Erkang AU - Wang E LA - eng PT - Journal Article PL - United States TA - Anal Chem JT - Analytical chemistry JID - 0370536 EDAT- 2004/01/09 05:00 MHDA- 2004/01/09 05:01 CRDT- 2004/01/09 05:00 PHST- 2004/01/09 05:00 [pubmed] PHST- 2004/01/09 05:01 [medline] PHST- 2004/01/09 05:00 [entrez] AID - 10.1021/ac034500x [doi] PST - ppublish SO - Anal Chem. 2003 Oct 15;75(20):5435-40. doi: 10.1021/ac034500x.