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A rhodamine-based sensor(1) has been developed for the detection of chromium ions.Cr~(3+)-induced opening of the rhodamine spirocycle in sensor(1) led to the distinct colorimetric and fluorescence responses.Among all the tested ions,only Cr~(3+) generated a significant fluorescence enhancement of up to13-fold,which indicated the high selectivity of 1.Sensor(1) was successfully applied in the in vivo fluorescence imaging of Cr~(3+) in C.elegans.The results provided solid evidences for the future estimation of Cr~(3+) in environmental applications and tobacco samples.
A rhodamine-based sensor (1) has been developed for the detection of chromium ions. Cr ~ (3 +) - induced opening of the rhodamine spirocycle in sensor (1) led to the distinct colorimetric and fluorescence responses. Among all the exposed ions , only Cr ~ (3+) generates a significant fluorescence enhancement of up to 13-fold, which shows the high selectivity of 1. Sensor (1) was successfully applied in the in vivo fluorescence imaging of Cr ~ (3+) in C. elegans. The results provided solid evidences for the future estimation of Cr ~ (3+) in environmental applications and tobacco samples.