A novel rhodamine chromone-based “Off-On” chemosensor for the differential detection of Al(III) and Zn(II) in aqueous solutions

- A new rhodamine chromone-based multi-ion responsive molecular sensor is reported.
- The sensor can be used to monitor Al3+ and Zn2+ in aqueous solutions.
- The sensor has high selectivity and sensitivity.
- The complex (RCZ) responses to Al3+ based on FRET mechanism.