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Energy transfer process in the reaction system NH2OH-NaOH-Cu(II)-Eu(III)/thenoyltrifluoroacetone

Energy transfer process in the reaction system NH2OH-NaOH-Cu(II)-Eu(III)/thenoyltrifluoroacetone
Energy transfer process in the reaction system NH2OH-NaOH-Cu(II)-Eu(III)/thenoyltrifluoroacetone
Chemiluminescence (CL) in the system containing hyrdroxylamine, sodium hydroxide, copper(II) ions and complex of europium(III) with thenoyltrifluoroacetone has been studied. A weak emission arises from hydroxylamine in the presence of copper(II) ions in a basic aqueous solution. Addition of europium(III) chelate to this system causes a significant increase in the chemiluminescence intensity. The dominant band observed in the emission spectrum occurs at ?? 600 nm, confirming that Eu(III) ions are the only emitters in the system studied. A strong correlation between the CL intensity and the concentrations of europium(III) chelate was observed. It means that europium(III) thenoyltrifluoroacetone complex does not influence the oxidation rate of hydroxylamine and indicates its important role in this reaction as a sensitiser. A possible mechanism of the chemiluminescence of the NH2OH-OH-NaOH-CU(II)?Eu(III) chelate system is presented.
1110-662X
143-146
Lis, S.
c6aecbd5-b594-4af4-aa28-fa08c8cd10ba
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Lis, S.
c6aecbd5-b594-4af4-aa28-fa08c8cd10ba
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327

Lis, S. and Kaczmarek, M. (2005) Energy transfer process in the reaction system NH2OH-NaOH-Cu(II)-Eu(III)/thenoyltrifluoroacetone. International Journal of Photoenergy, 7 (3), 143-146. (doi:10.1155/S1110662X05000218).

Record type: Article

Abstract

Chemiluminescence (CL) in the system containing hyrdroxylamine, sodium hydroxide, copper(II) ions and complex of europium(III) with thenoyltrifluoroacetone has been studied. A weak emission arises from hydroxylamine in the presence of copper(II) ions in a basic aqueous solution. Addition of europium(III) chelate to this system causes a significant increase in the chemiluminescence intensity. The dominant band observed in the emission spectrum occurs at ?? 600 nm, confirming that Eu(III) ions are the only emitters in the system studied. A strong correlation between the CL intensity and the concentrations of europium(III) chelate was observed. It means that europium(III) thenoyltrifluoroacetone complex does not influence the oxidation rate of hydroxylamine and indicates its important role in this reaction as a sensitiser. A possible mechanism of the chemiluminescence of the NH2OH-OH-NaOH-CU(II)?Eu(III) chelate system is presented.

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Published date: 2005

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Local EPrints ID: 57428
URI: https://eprints.soton.ac.uk/id/eprint/57428
ISSN: 1110-662X
PURE UUID: c5f294d1-f774-4314-b4af-cd58741dc44f

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Date deposited: 14 Aug 2008
Last modified: 13 Mar 2019 20:34

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Author: S. Lis
Author: M. Kaczmarek

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