| Electrochemiluminescent behaviors of alkaloids and tris(2,2'-bipyridine) ruthenium in organically modified silicate film. | |
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MedLine Citation:
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PMID: 18970736 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Electrogenerated chemiluminescences (ECLs) of alkaloids, such as berberine, trigonelline, allantoin and betaine, were studied in an aqueous alkaline buffer solution (pH 9.5), based on tris(2,2'-bipyridine)ruthenium(II) [Ru(bpy)(3)(2+)] immobilized in organically modified silicates (ORMOSILs) film on a glassy carbon electrode (GCE). The immobilized Ru(bpy)(3)(2+) showed good electrochemical and photochemical activities. In a flow system, the eluted alkaloids were oxidized on the modified GCE, and reacted with immobilized Ru(bpy)(3)(2+) at the potential of +1.50V (versus Ag/AgCl). The luminescence with lambda(max) 610nm was caused by a reaction of electrolytically formed Ru(bpy)(3)(3+) with an oxidized amine group to generate Ru(bpy)(3)(2+*). The determination limit was 5x10(-6)molL(-1), 8x10(-6)molL(-1), 2.0x10(-5)molL(-1) and 5.0x10(-5)molL(-1) for berberine, trigonelline, allantoin and betaine at S/N 3, respectively. In addition, the factors affecting the determination of the four alkaloids were also studied. |
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Authors:
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Li Zhao; Ying Tao; Xiaoqing Yang; Liyan Zhang; Munetaka Oyama; Xi Chen |
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Publication Detail:
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Type: Journal Article Date: 2006-01-18 |
Journal Detail:
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Title: Talanta Volume: 70 ISSN: 1873-3573 ISO Abbreviation: Talanta Publication Date: 2006 Aug |
Date Detail:
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Created Date: 2008-10-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2984816R Medline TA: Talanta Country: England |
Other Details:
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Languages: eng Pagination: 104-10 Citation Subset: - |
Affiliation:
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Department of Chemistry and Key Laboratory of Analytical Sciences of the Ministry of Education, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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