作者:Jiney Jose、Kevin Burgess
DOI:10.1021/jo061369v
日期:2006.9.1
Nile Red (compound A) fluoresces at about 530 nm with good quantum yields in apolar solvents. In more polar ones its fluorescence emission shows a dramatic, and potentially useful, shift to about 640 nm, but its quantum yield is significantly reduced. Further, Nile Red has a very poor solubility in aqueous media. The hypothesis tested in this paper is that Nile Red derivatives that incorporate water-solubilizing
尼罗红(化合物A)在非极性溶剂中在约530 nm处发出荧光,并具有良好的量子产率。在极性更大的电极中,其荧光发射显示出惊人的且可能有用的位移,移至约640 nm,但其量子产率却显着降低。此外,尼罗红在水性介质中的溶解性非常差。本文测试的假设是,掺有水溶性基团的尼罗红衍生物在水性介质中以及在更有用的640 nm附近的波长范围内,都趋于以良好的量子产率发出荧光。因此需要三个尼罗红的衍生物,1 - 3,制备。化合物1具有比尼罗红多的三个羟基,但出乎意料地不溶于水性介质。但是,二羧酸2和羧酸/磺酸衍生物3显示出优异的水溶性。2和3的光谱数据表明,它们在水性介质中在640 nm区域确实具有良好的荧光量子产率。化合物2和3的这些特性可能在生物技术荧光探针的开发中有用。