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[Spiropyran-based fluorescent sensor for Hg2+, Cr3+, Ag+ and their interaction spectra].
- Source :
-
Guang pu xue yu guang pu fen xi = Guang pu [Guang Pu Xue Yu Guang Pu Fen Xi] 2013 Apr; Vol. 33 (4), pp. 1092-7. - Publication Year :
- 2013
-
Abstract
- A 6',8'-di-tert-butyl-1-hydroxyethyl-3,3-dimethyl-indoline benzospiropyran L1 and its derivative L2 were synthesized and characterized. Chelation-enhanced appearswhen L1 with electron donating groups of 6', 8'-di-tert-butyl touch on benzospiropyran and affect the stability of cyanine structure. L1 exhibited high selectivity to Hg2+, Cr3+, Ag+ over other metal ions. While, there was no obvious interferences of coexist metal ions on Hg2+, Cr3+, Ag+ detection. The Hg2+, Cr+, Ag+ recognition of L1 not only could be achieved by means of fluorescense and absorption "turn-on" spectra but also an obvious color change from colorless to yellowish by naked-eyes. The binding of L1 to Ag+, Cr3+, Hg2+ are in 1 : 1 stoichometry and the detection limits are 7.435 8 x 10(-6), 6.126 8 x 10(-6), 3.452 4 x 10(-6) mol x L(-1). The sensing mechanism was also investigated from L2.
Details
- Language :
- Chinese
- ISSN :
- 1000-0593
- Volume :
- 33
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Guang pu xue yu guang pu fen xi = Guang pu
- Publication Type :
- Academic Journal
- Accession number :
- 23841435