A lanthanide-based chemosensor for bioavailable Fe3+ using a fluorescent siderophore: an assay displacement approach.
The measurement of trace analytes in aqueous systems has become increasingly important for understanding ocean primary productivity. In oceanography, iron (Fe) is a key element in regulating ocean productivity, microplankton assemblages and has been identified as a causative element in the development of some harmful algal blooms. The chemosenor developed in this study is based on an indicator displacement approach that utilizes time-resolved fluorescence and fluorescence resonance energy transfer as the sensing mechanism to achieve detection of Fe3+ ions as low as 5 nM. This novel approach holds promise for the development of photoactive chemosensors for ocean deployment.
Department of Marine Science, University of Southern Mississippi, 1020 Balch Blvd. Stennis Space Center, MS 39529, USA.
Karen M
KM
Orcutt
W Scott
WS
Jones
Andrea
A
McDonald
David
D
Schrock
Karl J
KJ
Wallace
D003676:Deferoxamine / Q000737:chemistry; D005290:Ferric Compounds / Q000032:analysis*; D031541:Fluorescence Resonance Energy Transfer; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D000461:Rhodophyta / Q000737:chemistry; D017262:Siderophores / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D005290:Ferric Compounds; D028581:Lanthanoid Series Elements; D017262:Siderophores; D003676:Deferoxamine