Abstract
A novel highly selective rhodamine based organic nanorods (ONRs) was successfully designed and synthesised, which showed both absorption and fluorescence turn-on responses for Al3+ ions in aqueous solution. The ONRs possess strong fluorescence emission in aqueous solution. These spectral changes are sufficient to detection of Al3+ ions in the visible region of the spectrum and thus support naked eye detection. The aforesaid studies reveal that ONRs−Al3+ complex is highly selective and fully reversible in presence of sulphide anions. This study raises the new possibility of a highly selective and sensitive ONRs having multifunctional detection, including cation and anions, using a successive fluorescence response strategy in biological systems. Besides, the fluorescence microscopic studies confirmed that the fluorescent probe ONRs could be used as an imaging probe for detection of uptake of Al3+ ions in HeLa cells.
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