Busca avançada
Ano de início
Entree


Bright and long-lasting aqueous peroxyoxalate chemiluminescence in cellulose microspheres

Texto completo
Autor(es):
Cabello, Maidileyvis C. ; Bastos, Erick L. ; El Seoud, Omar A. A. ; Baader, Wilhelm J.
Número total de Autores: 4
Tipo de documento: Artigo Científico
Fonte: Photochemistry and Photobiology; v. N/A, p. 10-pg., 2024-11-19.
Resumo

Water decreases the brightness of the peroxyoxalate chemiluminescence partially due to the hydrolysis of the oxalate reagent. Here, we show that encapsulation of an oxalate ester and the fluorescent activator in microspheres of cellulose esters increases the emission intensity 30 times compared to the same reaction in water without encapsulation, whereas the emission intensity decay rate constants are considerably lower. Emission intensities, rate constants and chemiluminescence quantum yields increase with increasing hydrogen peroxide concentrations. These results expand the potential of application of chemiluminescence, contributing for the development of ultrasensitive analytical methods. (AU)

Processo FAPESP: 14/22136-4 - Uso de solventes verdes e suas misturas na otimização de processos químicos
Beneficiário:Omar Abou El Seoud
Modalidade de apoio: Auxílio à Pesquisa - Temático
Processo FAPESP: 23/06417-2 - Mecanismos da Quimiluminescência Orgânicas
Beneficiário:Joséf Wilhelm Baader
Modalidade de apoio: Auxílio à Pesquisa - Regular