Assuntos
Antivirais/uso terapêutico , Custos de Cuidados de Saúde/estatística & dados numéricos , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/tratamento farmacológico , Imidazóis/uso terapêutico , Programas de Rastreamento , Adolescente , Adulto , Antivirais/economia , Carbamatos , Egito/epidemiologia , Feminino , Hepatite C Crônica/epidemiologia , Hepatite C Crônica/prevenção & controle , Humanos , Imidazóis/economia , Masculino , Programas de Rastreamento/economia , Programas de Rastreamento/métodos , Pessoa de Meia-Idade , Pirrolidinas , Estudos Soroepidemiológicos , Sofosbuvir/economia , Sofosbuvir/uso terapêutico , Valina/análogos & derivados , Adulto JovemRESUMO
This article reports the optical properties such as absorption profile, molar absorptivity, fluorescence profile and photo-physical parameters such as dipole moment, oscillator strength, fluorescence quantum yields, fluorescence lifetimes, laser performance and finally photostability of 2,5-Bis(5-tert-butyl-benzoxazol-2-yl)thiophene (BBOT),1,4-Bis(5-phenyl-2-oxazolyl)benzene (POPOB), 5-diphenyel-oxazole (PPO) laser dyes in different restricted hosts. (BBOT), (POPOB) and (PPO) are embedded in transparent silica-based nanoporous sol-gel glass and copolymer matrix of methyl methacrylate (MMA) and 2-hydroxyethyl methacrylate (HEMA). The absorption and fluorescence properties of these laser dyes in sol-gel glass matrices are compared with their respective properties in copolymer host. In case of sol-gel matrix, all dyes had higher quantum yields as well as lasing wavelength maxima. The laser performances as well as the photostability of these laser dyes in sol-gel glass displayed senior behavior compared with (MMA/ HEMA) copolymer samples upon using nitrogen laser (337.1 nm) as pumping energy.