Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
ELECTROCHEMILUMINESCENCE IN LOW IONIC-STRENGTH SOLUTIONS OF 1,2-DIMETHOXYETHANE
Autore:
MANESS KM; WIGHTMAN RM;
Indirizzi:
UNIV N CAROLINA,DEPT CHEM,CB 3290 CHAPEL HILL NC 27599 UNIV N CAROLINA,DEPT CHEM CHAPEL HILL NC 27599
Titolo Testata:
Journal of electroanalytical chemistry [1992]
fascicolo: 1-2, volume: 396, anno: 1995,
pagine: 85 - 95
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-TRANSFER REACTIONS; ELECTROGENERATED CHEMILUMINESCENCE; YIELDS; ACETONITRILE; LUMINESCENCE; OXIDATION; SOLVENT; RUBRENE; STATES;
Keywords:
CONCENTRATION EFFECTS; ELECTROCHEMILUMINESCENCE; 1,2-DIMETHOXYETHANE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
K.M. Maness e R.M. Wightman, "ELECTROCHEMILUMINESCENCE IN LOW IONIC-STRENGTH SOLUTIONS OF 1,2-DIMETHOXYETHANE", Journal of electroanalytical chemistry [1992], 396(1-2), 1995, pp. 85-95

Abstract

Steady-state electrochemiluminescence (ECL) arising from ion annihilation reactions was examined at a double-band microelectrode in 1,2-dimethoxyethane (DME) as a function of electrolyte concentration for the following reactions: the 9,10-diphenylanthracene (DPA) radical cation with the DPA, benzil and 2-naphthyl phenyl ketone (NPK) radical anions, and the rubrene radical cation with the rubrene radical anion. The ECL efficiency of all systems was found to increase as the added electrolyte concentration was decreased from 100 to 0.1 mM. These increases were found to correlate with changes in Delta E(1/2) attributed to ion-pairing of the radical ions with their electrolyte counter-ions. For the energy-sufficient ECL reaction of DPA in DME, the increase in the Gibbs energy available for reaction as the electrolyte concentration was lowered produced an ECL efficiency approaching the theoretical limit of 25%.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 08:27:19