Electrochemiluminescence of dipicolinic acid (DPA) and (bpy)<sub>2</sub>Ru(DPA)<sup>+</sup> (bpy = 2,2′‐bipyridine)

Jessica Byrd; John G. Bruno; Mark Richter

doi:10.1002/bio.886

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Electrochemiluminescence of dipicolinic acid (DPA) and (bpy)₂Ru(DPA)⁺ (bpy = 2,2′‐bipyridine)

Jessica Byrd John G. Bruno Mark Richter

Year: 2005 Journal: Luminescence Vol: 21 (2)Pages: 72-76 Publisher: Wiley

DOI: 10.1002/bio.886

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Abstract

Abstract The spectroscopic and electrochemiluminescence (ECL) properties of dipicolinic acid (DPA), (bpy) 2 Ru 2+ (bpy = 2,2′‐bipyridine) and the species formed when DPA and (bpy) 2 Ru 2+ [abbreviated to (bpy) 2 Ru(DPA) + ] are allowed to react are reported. The UV‐Vis absorption maxima for (bpy) 2 Ru 2+ and (bpy) 2 Ru(DPA) + are 493 and 475 nm, respectively, indicating the in situ formation of a complex between DPA and (bpy) 2 Ru 2+ . DPA, (bpy) 2 Ru 2+ and (bpy) 2 Ru(DPA) + display ECL upon oxidation in the presence of the oxidative–reductive co‐reactant tri‐ n ‐propylamine (TPrA). The ECL of (bpy) 2 Ru(DPA) + is at least two‐fold higher than either of the parent species. An ECL spectrum of (bpy) 2 Ru(DPA) + displays a peak maximum 40 nm red‐shifted from the photoluminescence peak maximum, suggesting that the excited state formed electrochemically is different from that formed spectroscopically. Copyright © 2005 John Wiley & Sons, Ltd.

Keywords:

Dipicolinic acid Electrochemiluminescence Chemistry Ruthenium Excited state Bipyridine Electrochemistry 2,2'-Bipyridine Photoluminescence Photochemistry Inorganic chemistry Crystallography Materials science Physical chemistry Crystal structure Catalysis Electrode Organic chemistry

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Advanced biosensing and bioanalysis techniques

Life Sciences → Biochemistry, Genetics and Molecular Biology → Molecular Biology

Electrochemical Analysis and Applications

Physical Sciences → Chemistry → Electrochemistry

Biosensors and Analytical Detection

Physical Sciences → Engineering → Biomedical Engineering

Electrochemiluminescence of dipicolinic acid (DPA) and (bpy)₂Ru(DPA)⁺ (bpy = 2,2′‐bipyridine)

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