Recognition Preference of Rhodamine Derivative Bearing Phthalimido Gly forHg2+by UV-Vis and Fluorescence Spectroscopy

Autor:	Li Chen, Bin Ma, Fanyong Yan, Donglei Cao, Ning Yang, Meng Wang
Rok vydání:	2013
Předmět:	Detection limit Chemistry Metal ions in aqueous solution Photochemistry Atomic and Molecular Physics and Optics Fluorescence spectroscopy Analytical Chemistry Ion Rhodamine chemistry.chemical_compound Ultraviolet visible spectroscopy Moiety Spectroscopy
Zdroj:	Journal of Spectroscopy. 2013:1-7
ISSN:	2314-4939 2314-4920
DOI:	10.1155/2013/878234
Popis:	An effective Hg2+-specific probe1was designed and prepared based on Phthalimido Gly modified rhodamine B. The sensing behavior of probe1was studied by UV-Vis and fluorescence spectroscopy. Probe1showed excellent high selectivity and sensitivity towards Hg2+over commonly coexistent metal ions in neutral solution, which could be attributed to the Hg2+-triggered ring opening of the spirolactam of the rhodamine moiety and the formation of a 1 : 11-Hg2+complex. The limit of detection (LOD) based on3δblank/kwas calculated to be 2.8 × 10−8 M, as well as an excellent linear relationship with the concentration of Hg2+in the range from 0.1 × 10−6to 1.0 × 10−6 mol/L (R2=0.98927). In addition, the effects of pH, coexisting metal ions, and the reversibility were investigated in detail.
Databáze:	OpenAIRE
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