FRET-induced nanomolar detection of Fe2+ based on cinnamaldehyde-rhodamine derivative

A new dimethylaminocinnamaldehyde linked rhodamine based fluorescence receptor 3 is synthesized which shows fluorescence resonance energy transfer in the presence of Fe2+ ions, thus enhancing rational partition in between donor and acceptor emissions and permitting separated measurement of emissions of both fluorophores. (C) 2011 Elsevier Ltd. All rights reserved.