Chemiluminescence and Fluorescence of the Europium Ions‐adenine Nucleotides System and Its Possible Biological Significance

Elbanowski, M.; Paetz, Maria; Siawinski, Janusz; Ciesla, Leszek

doi:10.1111/j.1751-1097.1988.tb02752.x

Cited by 20 publications

(14 citation statements)

References 16 publications

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“…It has been proved that the main emitter in the chemiluminescent system of Eu(II) ions and hydrogen peroxide are Eu(III) ions excited to the emission level 5 D 0 ; the excitation of europium ions is a consequence of a radical reaction (Eqs. (1), (2)) [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Complexation of europium ions decreases or increases chemiluminescence (CL) intensity of the Eu(II)/(III)-ligand-H 2 O 2 system depending on properties and structure of the ligand [4]. The studies reported in this paper were undertaken to check the usefulness of CL measurements to study the stabilizing effect of macrocyclic compounds on Eu(II) ions in the system Eu(II)/(III)-H 2 O 2 .…”

Section: Introductionmentioning

confidence: 99%

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Stabilization of Eu(II) Ions by Macrocyclic Compounds in the Oxidation Reaction with Hydrogen Peroxide

Staniński

Kaczmarek

Schroeder

et al. 1999

Monatshefte fuer Chemie

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The in¯uence of coronands 15C5 and 18C6 and cryptands 2.2.1 and 2.2.2 on the chemiluminescence (CL) of the system Eu(II)/(III)-H 2 O 2 was studied. Analysis of the chemiluminescence spectra revealed that the excited Eu(III) ions are the dominant emitter in all cases. The stabilizing effect of the macrocyclic compounds was manifested in an extension of the CL duration and was particularly strong in the systems with cryptands. The protective activity of ligands is explained by the matching of the ligand's cavity with the size of Eu(II) ions. Measurement of the Eu(II) absorption band decay ( 248 nm) upon oxidation by hydrogen peroxide con®rmed the results of the CL studies according to which the stabilizing properties of the macrocyclic ligands towards Eu(II) ions increase in the order 15C5 < 18C6 < 2.2.1 < 2.2.2 in aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stabilization of Eu(II) Ions by Macrocyclic Compounds in the Oxidation Reaction with Hydrogen Peroxide

Staniński

Kaczmarek

Schroeder

et al. 1999

Monatshefte fuer Chemie

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“…The adenosine nucleotides -ATP, ADP, AMP and c-AMP, playing a very important role among biochemical, high-energy molecules, have been investigated [13]. The highest observed CL intensity (its maximum, Imax, as a peak height), as well as the integral intensity (light sum, Σ ΙΔt) of CL, originated from the Eu(II)/Eu(III)-nucleotide-Η2O2 system, depends on the number of phosphates, i.e.…”

Section: Our Own Studies On the Applications Of The CL Methods With Lnmentioning

confidence: 99%

Chemiluminescence Used in Biochemical Investigations. An Application of the Lanthanide Ions as a Chemiluminescent Probe

1993

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•This article concerns problems related to chemiluminescence and briefly fluorescence, which will be discussed. It also gives a review of application of the chemiluminescent method in chemistry, biology and medicine, in the absence of 1anthanide ions and in their presence.PACS numbers: 78.60.PsIn this review the following important problems are covered: 1. Chemiluminescence (CL) as a phenomenon and a method of study. 2. The occurrence of CL in chemistry, biology and medicine (without the presence' of lanthanide ions, Ln(ΙIΙ)). 3. Importance of the lanthanide ions in the investigations discussed. 4. The role of the fluorescent method in the studies. 5. Our own studies on the applications of the CL method with Ln(ΙIΙ) ion as a spectroscopic probe. Chemiluminescence as a phenomenon and a method of studyChemiluminescence [1-3], similarly as bioluminescence, is still a very interesting phenomenon and a modern spectroscopic method used mainly in chemistry, biology and medicine. The discussed method may be applied in investigation of many problems in these fields.Chemiluminescence is an ultra-weak emission of light generated as a result of chemical reaction. As CL is a complicated process, it can be, in general, divided into two steps: the first -the excitation stage connected with generation of excited molecule identical with the excited product, and the second -the luminescence stage at which the excited molecule is deactivated to its ground state emitting a quantum of radiation. The first stage is of chemical nature, while the second - (993)

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“…Much research [1][2][3][4][5] has indicated that carbonate or bicarbonate acted not only as a buffer reagent but also as the CL enhancer. It has been confirmed that CO 3 2-was a luminous species when it coexisted with a strong oxidant in basic solution.…”

Section: Introductionmentioning

confidence: 99%

Chemiluminescence Energy Transfer Reaction for the On-Line Preparation of Peroxymonocarbonate and Eu(II)−Dipicolinate Complex

2006

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In this work, an on-line preparation of peroxymonocarbonate was formed innovatively, which offered a reliable intermediate for further investigation. The forming conditions of on-line peroxymonocarbonate ions were investigated in detail. Meanwhile, the energy transfer chemiluminescent reaction of peroxymonocarbonate and the Eu(II)-dipicolinate complex was studied. Through UV-visible absorption spectra, CL method, ESR spin-trapping technique, and mass spectrum experiments, it can be concluded that peroxymonocarbonate oxidizes Eu(II) to Eu(III), and simultaneously creates radicals. The bond rearrangement within radicals formed the singlet molecular oxygen. The energy originating from the singlet oxygen was accepted by the (Eu(III)dipic) -complex. The excited (Eu(III)*dipic)-ions underwent radiative deactivation and emitted the chemiluminescence. The peroxymonocarbonate system was a simple, inexpensive, and relatively nontoxic alternative to other oxidants, and it can be used in a mild, neutral-pH environment.

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Chemiluminescence and Fluorescence of the Europium Ions‐adenine Nucleotides System and Its Possible Biological Significance

Cited by 20 publications

References 16 publications

Stabilization of Eu(II) Ions by Macrocyclic Compounds in the Oxidation Reaction with Hydrogen Peroxide

Stabilization of Eu(II) Ions by Macrocyclic Compounds in the Oxidation Reaction with Hydrogen Peroxide

Chemiluminescence Used in Biochemical Investigations. An Application of the Lanthanide Ions as a Chemiluminescent Probe

Chemiluminescence Energy Transfer Reaction for the On-Line Preparation of Peroxymonocarbonate and Eu(II)−Dipicolinate Complex

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