Cysteamine CdS quantum dots decorated with Fe3+ as a fluorescence sensor for the detection of PPi

- Sensitive and selective fluorescence sensor for the detection of pyrophosphate in aqueous media.
- PPi can induce the fluorescence quenching of Fe3+ decorated cysteamine CdS QDs.
- Very low limit of detection (0.11 μM) for PPi.
- Successfully applied to the detection of PPi in urine samples.