Selective detection of cesium by a water-soluble fluorescent molecular sensor based on a calix[4]arene-bis(crown-6-ether).

@article{Souchon2006SelectiveDO,
  title={Selective detection of cesium by a water-soluble fluorescent molecular sensor based on a calix[4]arene-bis(crown-6-ether).},
  author={Vincent Souchon and Isabelle Leray and B. Valeur},
  journal={Chemical communications},
  year={2006},
  volume={40},
  pages={4224-6}
}
A tetrasulfonated calixarene with two appended crowns, each including a dioxycoumarin fluorophore, is highly soluble in water and shows excellent selectivity for cesium ions.