Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline-based magnetic nanostructures for highly sensitive detection of zinc ions in aqueous solutions
© 2018 Elsevier Ltd. Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline based magnetic nanosensors, Fe3O4@SiO2-PEG-4AQ and Fe3O4@SiO2-4AQ, were successfully fabricated and characterised. Enhanced fluorescent intensity was demonstrated by both nanosensors. Upon complexation with zinc ions, a further...
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| Format: | Journal Article |
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Elsevier
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/68605 |
| _version_ | 1848761844667252736 |
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| author | Pourfallah, Ghazaleh Lou, Xia |
| author_facet | Pourfallah, Ghazaleh Lou, Xia |
| author_sort | Pourfallah, Ghazaleh |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 Elsevier Ltd. Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline based magnetic nanosensors, Fe3O4@SiO2-PEG-4AQ and Fe3O4@SiO2-4AQ, were successfully fabricated and characterised. Enhanced fluorescent intensity was demonstrated by both nanosensors. Upon complexation with zinc ions, a further enhancement of 13.5-fold was revealed by Fe3O4@SiO2-PEG-4AQ. A red shift of 42 nm was also observed. The presence of other metal cations including Ni2+, Co2+, Ca2+, Cd2+, Hg2+, Mg2+, Mn2+and Ag+, showed no interference towards Zn2+. A sensitive detection limit of 0.0065 µM and 0.0125 µM was indicated by Fe3O4@SiO2-PEG-4AQ and Fe3O4@SiO2-4AQ respectively. The high sensitivity and selectivity remained constant within a wide range of pH values and were reversible upon treatment with EDTA. The PEG spacer between the magnetic core and the fluorophore offered further improvement of fluorescence intensity and detection sensitivity. To the best of our knowledge, this is the first study on 4-aminoquinoline based reusable nanochemosensor for zinc ion detection. |
| first_indexed | 2025-11-14T10:38:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-68605 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:38:08Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-686052018-07-12T03:21:44Z Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline-based magnetic nanostructures for highly sensitive detection of zinc ions in aqueous solutions Pourfallah, Ghazaleh Lou, Xia © 2018 Elsevier Ltd. Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline based magnetic nanosensors, Fe3O4@SiO2-PEG-4AQ and Fe3O4@SiO2-4AQ, were successfully fabricated and characterised. Enhanced fluorescent intensity was demonstrated by both nanosensors. Upon complexation with zinc ions, a further enhancement of 13.5-fold was revealed by Fe3O4@SiO2-PEG-4AQ. A red shift of 42 nm was also observed. The presence of other metal cations including Ni2+, Co2+, Ca2+, Cd2+, Hg2+, Mg2+, Mn2+and Ag+, showed no interference towards Zn2+. A sensitive detection limit of 0.0065 µM and 0.0125 µM was indicated by Fe3O4@SiO2-PEG-4AQ and Fe3O4@SiO2-4AQ respectively. The high sensitivity and selectivity remained constant within a wide range of pH values and were reversible upon treatment with EDTA. The PEG spacer between the magnetic core and the fluorophore offered further improvement of fluorescence intensity and detection sensitivity. To the best of our knowledge, this is the first study on 4-aminoquinoline based reusable nanochemosensor for zinc ion detection. 2018 Journal Article http://hdl.handle.net/20.500.11937/68605 10.1016/j.dyepig.2018.05.021 Elsevier restricted |
| spellingShingle | Pourfallah, Ghazaleh Lou, Xia Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline-based magnetic nanostructures for highly sensitive detection of zinc ions in aqueous solutions |
| title | Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline-based magnetic nanostructures for highly sensitive detection of zinc ions in aqueous solutions |
| title_full | Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline-based magnetic nanostructures for highly sensitive detection of zinc ions in aqueous solutions |
| title_fullStr | Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline-based magnetic nanostructures for highly sensitive detection of zinc ions in aqueous solutions |
| title_full_unstemmed | Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline-based magnetic nanostructures for highly sensitive detection of zinc ions in aqueous solutions |
| title_short | Novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline-based magnetic nanostructures for highly sensitive detection of zinc ions in aqueous solutions |
| title_sort | novel 4-amino-2-methyl-8-(trifluoromethyl)quinoline-based magnetic nanostructures for highly sensitive detection of zinc ions in aqueous solutions |
| url | http://hdl.handle.net/20.500.11937/68605 |