作者:Carolina Aliaga、Freddy Celis、Susan Lühr、Rubén Oñate
DOI:10.1007/s10895-015-1579-0
日期:2015.7
The photophysical behavior of three pyridinium-derived fluorophores, the N-aryl-2,4,6-triphenylpyridinium, the N-aryl-5,6-dihydro-2,4-diphenylbenzo[h]quinolinium and the N-aryl-5,6,8,9-tetrahydro-7-phenyldibenzo[c,h]acridinium perchlorates, was investigated. Comparison of their fluorescence quantum yields led to the preparation of a novel, more sensitive pyridinium-based, TEMPO-attached prefluorescent probe for H-abstraction processes, the N-4-[4-(N-oxyl-2,2,6,6-tetramethylpiperidinyl)carbonylamino]phenyl}-5,6,8,9-tetrahydro-7-phenyldibenzo[c,h]-acridinium perchlorate.
研究了三种吡啶盐类荧光染料的光物理行为,分别是N-芳基-2,4,6-三苯基吡啶盐、N-芳基-5,6-二氢-2,4-二苯基苯并[h]喹啉盐以及N-芳基-5,6,8,9-四氢-7-苯基二苯并[c,h]吖啶高氯酸盐。通过比较它们的荧光量子产率,制备了一种新型的、更灵敏的基于吡啶盐的TEMPO(2,2,6,6-四甲基哌啶-1-氧自由基)连接的前荧光探针,用于H-抽提过程,即N-4-[4-(N-氧基-2,2,6,6-四甲基哌啶基)羰基氨基]苯基}-5,6,8,9-四氢-7-苯基二苯并[c,h]吖啶高氯酸盐。