Supporting information
Silver nanoparticles capped with 8-hydroxyquinoline-5-sulfonate for the determination of trace aluminum in water samples and for intracellular fluorescence imaging
Yan Shang, Dan Gao,Fangying Wu[(], Xiaofen Wan
Department of Chemistry, Nanchang University, Nanchang 330031, China
E-mail:
List of Contents page number
Fig. S1. The effect of pH on the absorbance ratio(A) and the fluorescence intensity (B)
of 8Q5S-Ag NPs in the absence and presence of Al3+ ions (3 µM). 2
Fig. S2. (A) Fluorescent spectra of 8Q5S-Ag NPs in the presence metal ions.
(B) Fluorescent intensity of 8Q5S-Ag NPs upon addition various metal ion
and the mixture of Al3+ and another metal ion. 2
Fig. S3. Photographs of 8Q5S -Ag NPs solution after adding different metal ions (3 µM),
from left to right, in turn for control, Al3+, Cr3+, Fe3+, Ag+, Ba2+,Ca2+, Mg2+, Cd2+, Co2+,
Cu2+, Hg2+, Mn2+, Na+, Ni2+, Pb2+, and Zn2+. 2
Fig. S4 Absorption spectra(A) and fluorescent spectra (B)of the 8Q5S-Ag NPs system
in the presence of 3 µM Al3+, (3 µM Al3++10 µM F-) and (3 µM Al3++10 µM F-) 3
Fig. S5 UV-vis absorption spectra of 8Q5S(5×10-5 M) in the presence of different metal
ion, the concentration of the ion was (2.5×10-5 M) 3
Fig. S1. The effect of pH on the absorption intensity ratio (A) and the fluorescence intensity (B) of 8Q5S-Ag NPs in the absence (a) and presence (b) of Al3+ ions (3 µM).
Fig. S2. (A) Fluorescent spectra of 8Q5S-Ag NPs in the presence metal ions. (B) Fluorescent intensity of 8Q5S-Ag NPs upon addition various metal ion and the mixture of Al3+ and another metal ion. Colored bars represent the emission intensity of addition single metal ions (3 µM), gray bars are the addition of Al3+ (3 µM) with another metal ions (3 µM Fe3+ and Cr3+, 30 µM Na+, Ag+, Ba2+,Ca2+, Mg2+, Cd2+, Co2+, Cu2+, Hg2+, Mn2+, Ni2+, Pb2+, and Zn2+) in pH 7.4 aqueous solution, respectively.
Fig. S3. Photographs of 8Q5S -Ag NPs solution after adding different metal ions (3 µM), from left to right, in turn for control, Al3+, Cr3+, Fe3+, Ag+, Ba2+,Ca2+, Mg2+, Cd2+, Co2+, Cu2+, Hg2+, Mn2+, Na+, Ni2+, Pb2+, and Zn2+.
Fig. S4 Absorption spectra(A) and fluorescent spectra (B)of the 8Q5S-Ag NPs system in the presence of 3 µM Al3+, (3 µM Al3++10 µM F-) and (3 µM Al3++10 µM F-)
Fig. S5 UV-vis absorption spectra of 8Q5S(5.0×10-5 M) in the presence of different metal ion, the concentration of the ion was (2.5×10-5 M)
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[(]* Corresponding author: Fangying Wu, Tel: + 86 79183969882(O). E-mail address: ;