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Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores
Published on: August 19, 2013
A novel nitrogen heterocycle platform-based highly selective and sensitive fluorescence chemosensor for the detection
Zengchen Liu1, Shujing Li1, Genwu Ge1
1College of Chemistry and Chemical Engineering, Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, The Key Laboratory of Rare Earth Functional Materials and Applications, Zhoukou Normal University Zhoukou 466001 PR China liuzengchen@zknu.cn hxzhanghui2005@163.com.
Abstract:
In the study, a highly selective and sensitive fluorescence sensor derived from nitrogen heterocycle was synthesized and characterized. By the fluorescence experiments, it was found to show a higher response toward Al3+ than other commonly coexistent metal ions in C2H5OH/H2O media (pH = 7.2). Moreover, the large binding constant (3.44 × 1014 M-1) between Al3+ and the sensor was calculated by fluorescence titration experiment. In addition, the synergistic effect mechanism due to photoinduced electron transfer (PET) and C[double bond, length as m-dash]N isomerization was deduced according to the fluorescence behavior. In addition, the fluorescence imaging in living cells was studied systemically, which exhibited high fluorescence sensing activity toward Al3+.
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