Abstract
A novel fluorescence nano-chemosensor for MnO4- anion has been developed by assembly of fluorescent aluminum complex of 8-hydroxyquinoline (8-HQ) within the channels of modied SBA-15 (SBA-SPS-QAl). The ordered porous structure of SBA-15 is still retained after hybridization by chemosensor material. A remarkable fluorescent quenching of SBA-SPS-QAl was attributed to the effect of MnO4- anion. The linear detecting range of the hybrid mesoporous chemosensor is 0.16-4.6 μmol L -1 of MnO4- anion and the lowest detection limit is 0.2 ng mL-1 in the aqueous solution. SBA-SPS-QAl showed a selective and sensitive fluorescent quenching response toward MnO 4- ion in comparison with N3-, NO3 -, CN-, HCO3-, Cl-, F-, H2PO4 -, SO 42-, Cr2O72-, IO 3- and I- ions, which was because of the higher stability of its inorganic complex with permanganate anion.
| Original language | English |
|---|---|
| Pages (from-to) | 684-688 |
| Number of pages | 5 |
| Journal | Talanta |
| Volume | 88 |
| DOIs | |
| State | Published - 15 Jan 2012 |
| Externally published | Yes |
Keywords
- Aluminum complex of 8-hydroxyquinoline
- Fluorescent nano-chemosensor
- Mesostructured materials
- Quenching
- SBA-15
ASJC Scopus subject areas
- Analytical Chemistry
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