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Evaluation of electrogenerated chemiluminescence from a neutral Ir(III) complex for quantitative analysis in flowing streams

Title
Evaluation of electrogenerated chemiluminescence from a neutral Ir(III) complex for quantitative analysis in flowing streams
Authors
Shin, I.-S.[Shin, Ik Soo]Kang, Y.-T.[Kang, Yeung T.]Lee, J.-K.[Lee, Jin Kyu]Kim, H.[Kim, Ha Suck]Kim, T.H.[Kim, Tae Hyun]Kim, J.S.[Kim, Jong Seung]
DGIST Authors
Kim, H.[Kim, Ha Suck]
Issue Date
2011
Citation
Analyst, 136(10), 2151-2155
Type
Article
Article Type
Article
Keywords
Acetyl AcetonateAlkanoneChemiluminescent MeasurementsChemistryChemoluminescenceCoordination ComplexesCoordination CompoundElectrochemical AnalysisElectrochemical TechniquesFlow Injection AnalysisHydrogen-Ion ConcentrationHydroxybutyratesHydroxybutyric AcidIridiumMethodologyPentanonespHPropylaminePropylaminesSynthesis
ISSN
0003-2654
Abstract
Though recently Ir(III) complexes have attracted much interest in electrochemiluminescent (ECL) analysis due to their high emission in various wavelengths, there were a few studies reported on its analytical applications. In this study, we evaluate the ECL from (pq)2Ir(acac) (pq = 2-phenylquinolate, acac = acetylacetonate) for the use in flow injection analysis. An aqueous solution of the analyte and (pq)2Ir(acac) passes through the reaction/observation cell, and then ECL reaction is generated by electrochemical initiation on the analyte and (pq)2Ir(acac). Tri-n-propylamine (TPrA) is used as a representative analyte for evaluation. Additionally, a comparison is made of the relative ECL intensities obtained for a variety of analytes including oxalate, amino acids, aliphatic amines, and NADH. The (pq)2Ir(acac) produces efficient ECL upon TPrA exhibiting the limit of detection of 5 nM with a linear range of 3 orders of magnitude in concentration whereas 20 nM is observed in the conventional Ru(bpy) 3 2+ system. It shows particular sensitivity advantages for oxalate, proline, and tartaric acid. The ECL generation upon various analytes proposes direct applicability of (pq)2Ir(acac) as a post-column detection tool. © 2011 The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/3474
DOI
10.1039/c1an15045f
Publisher
Royal Society of Chemistry
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringETC1. Journal Articles


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