A fluorescent pyrophosphate sensor via excimer formation in water.

@article{Cho2005AFP,
  title={A fluorescent pyrophosphate sensor via excimer formation in water.},
  author={Hong Kwan Cho and Dong Hoon Lee and Jong-In Hong},
  journal={Chemical communications},
  year={2005},
  volume={13},
  pages={1690-2}
}
A new fluorescent sensor based on a pyrene/Zn(II)-dpa (dpa = bis(2-pyridylmethyl)amine) conjugate displays excimer emission selective for pyrophosphate over other anions.