Journal
JOURNAL OF FLUORESCENCE
Volume 20, Issue 1, Pages 3-8Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10895-009-0514-7
Keywords
Anion sensor; Pyrazole; Supramolecular chemistry; Fluorescent
Funding
- National Natural Science Foundation of China [20371028, 20671052]
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Two simple fluorescent anion receptors based on 1-phenyl-3-methylpyrozole-5-one-4-one phenylhydrazone (L1) and 1-phenyl-3-methylpyrozole-5-one-4-one p-nitrophenylhydrazone (L2) were designed, synthesized and characterized with H-1 NMR, COSY spectrum, C-13 NMR, ESI-mass and elemental analyse. Interestingly, two receptors with similar configuration exhibited different anion binding behaviors in DMSO solution. The results of Job plots and ESI-mass spectrum indicate that L1 bind anions such as F-, AcO-, H2PO (4) (-) to form 2:1 host-guest complexation, while L2 bind anions to form 1:1 host-guest complexation in the solution.
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