Journal
JOURNAL OF FLUORESCENCE
Volume 27, Issue 3, Pages 1191-1200Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10895-017-2056-8
Keywords
Fluorescent probe; 1,8-Naphthalimide; Aluminium ion; Schiff base
Funding
- National Natural Science Foundation of China [21367017]
- Natural Science Foundation of Gansu Province [1212RJZA037]
- Graduate Student Innovation Projects of Lanzhou Jiaotong University
Ask authors/readers for more resources
A simple and highly selective aluminium ion fluorescent probe (N-n-butyl-4-[3,3'-((2-aminoethyl)azanediyl)bis(N'-(2-hydroxy-3-methoxybenzylidene)-propanehydrazide)]-1,8-naphthalimide) (P-1) employing 1,8-naphthalimide as the fluorophore group and Schiff base as the recognition group has been successfully synthesized and systemically characterized. The structure of probe P-1 has been established by single crystal X-ray. The photophysical properties of probe P-1 revealed that the values of the fluorescence quantum yield are higher in non-polar solvents than in polar solvents. Compared with the free P-1, the fluorescence intensity of P-1 shows a significant fluorescence enhancement in the presence of Al3+ without any significant interference from other cations and anions. In addition, from the UV-vis titration, fluorescence titration,Job's plot and H-1 NMR spectra analysis, we could primarily confirm that three important coordinative sites of P-1 for Al3+ were from imine nitrogen and tertiary amine nitrogen and formed a 1:1 complex. The fluorescence intensity for the (P-1) showed a good linearity with the concentration of Al3+ in the range of 3.0-10.0 mu M, with a detection limit of 8.65 x 10(-8) M and a binding constant (K-b) of 4.95 x 10(4) M-1. It is worthy of note that the probe P-1 was successfully applied in detection of Al3+ in Yellow River and tap water samples.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available