摘要
研究了化合物N-戊基-4-(2,2′-二吡啶基)氨基-1,8-萘酰亚胺在不同pH值下的紫外可见光谱和荧光光谱。在酸性条件下,二吡啶胺上的仲胺质子化后,使二吡啶胺给电子能力降低,萘酰亚胺荧光团的荧光发生猝灭。通过调控pH值来改变萘酰亚胺的4位取代基二吡啶胺的给电子能力,使荧光发生明显变化,从而得到新型的荧光探针。
The UV-VIS absorption spectra and emission spectra of N-pentyl-4- (2,2'-dipyridyl) amino-1, 8- naphthalimide in different pH solutions are studied here. The fluorescence of 1,8-naphthalimide chro- mophore is put out by the amine nitrogen protonation of 2,2'-dipyridylamine unit. The electron donation a- bility of 2,2'-dipyridylamine unit linked with the 4-position of the naphthalimide unit can be modulated by pH. A new luminescent sensor has been got.
出处
《上海应用技术学院学报(自然科学版)》
2005年第4期255-258,共4页
Journal of Shanghai Institute of Technology: Natural Science
关键词
紫外可见光谱
荧光光谱
PH值
荧光探针
UV-VIS absorption spectra
emission spectra
pH
luminescent sensor