RESUMO
The luminescence behavior of diiodofluorescein (DIF) and tetrabromofluorescein (TBF) have been investigated including the solid surface room temperature phosphorescence (SS-RTP) and the room temperature fluorescence (RTF). The luminescence intensities of the two compounds are strongest in alkaline solution. RTP lifetime of the two compounds are in the range of 130-140 ms. The RTP and RTF polarization was in the range of 0.01-0.05. The two analytical methods--SS-RTP and RTF, of the two compounds have been established.
Assuntos
Amarelo de Eosina-(YS)/química , Iodo/química , Concentração de Íons de Hidrogênio , Espectrometria de Fluorescência , TemperaturaRESUMO
A comparative study, luminescence behavior of 6-Mercaptopurine (6-MP), Azathiopurine (BAN), and 8-Azaguanine (8-Azan) have been investigated including the low temperature phosphorescence, the low temperature fluorescence, the room temperature phosphorescence (RTP) and the room temperature fluorescence (RTF). The effect of pH on the luminescence intensity is discussed. Analytical characteristics of RTF and RTP of 6-MP, BAN, and 8-Azan have been studied. The lifetime of phosphorescence and the polarity of RTF and RTP have been examined.
