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Calixarene‐Based Fluorescent Molecular Sensors for Toxic Metals
Author(s) -
Leray Isabelle,
Valeur Bernard
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900386
Subject(s) - chemistry , calixarene , cryptand , fluorophore , fluorescence , photoinduced electron transfer , metal ions in aqueous solution , photochemistry , context (archaeology) , excimer , crown ether , electron transfer , combinatorial chemistry , metal , inorganic chemistry , nanotechnology , molecule , ion , organic chemistry , paleontology , physics , quantum mechanics , biology , materials science
There is an increasing interest in the early detection of toxic metals in the environment. In this context, fluorescence is a very attractive detection method because of its intrinsic sensitivity, its response time and the possibility of imaging via fluorescence microscopy. Of the various complexing units available for the detection of toxic metal ions (chelators, open‐chain structures, crown‐ethers, cryptands), calixarenes offer distinct advantages in term of selectivity and the easy incorporation of a fluorophore into the structure. In this microreview, after recalling the main classes offluorescent molecular sensors based on cation‐induced changes in excited‐state processes (photoinduced electron‐ or charge‐transfer, excimer formation, energy transfer), we present various calixarene‐based sensors designed for the detection of caesium, mercury, lead and cadmium.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)