ANALYTICAL AND MECHANISTIC ASPECTS OF THE ROOM-TEMPERATURE FLUORESCENCE AND PHOSPHORESCENCE OF BENZO(F) QUINOLINE ADSORBED ON SILICA-GEL CHROMATOPLATES WITH HUMIDIFIED GASES

被引:7
作者
CITTA, LA [1 ]
HURTUBISE, RJ [1 ]
机构
[1] UNIV WYOMING,DEPT CHEM,LARAMIE,WY 82071
关键词
D O I
10.1016/0039-9140(92)80203-P
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The solid-matrix room-temperature fluorescence and room-temperature phosphorescence properties of benzo(f)quinoline adsorbed on silica gel chromatoplates were investigated over a wide range of humidities in N2, air and O2. Both neutral and acidic conditions were used and even at the highest relative humidity used, 93% relative humidity, the room-temperature fluorescence and phosphorescence intensities from benzo(f)quinoline were not totally quenched. However, in all experiments, the room-temperature phosphorescence was much more sensitive to humidity quenching than the room-temperature fluorescence. The results gave rather detailed information on quenching of the room-temperature fluorescence and phosphorescence in the different gases at a variety of humidities. It was possible to calculate the contribution to the percent decrease in luminescence due to moisture or a quenching gas. Thus, a more detailed assessment could be made about the quenching of moisture and individual quenching gases on the solid-matrix fluorescence and phosphorescence.
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页码:1065 / 1072
页数:8
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