[Spiropyran-based fluorescent sensor for Hg2+, Cr3+, Ag+ and their interaction spectra].
Guang Pu Xue Yu Guang Pu Fen Xi
; 33(4): 1092-7, 2013 Apr.
Article
en Zh
| MEDLINE
| ID: mdl-23841435
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.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
Zh
Revista:
Guang Pu Xue Yu Guang Pu Fen Xi
Año:
2013
Tipo del documento:
Article
País de afiliación:
China