Phloroglucin-based ferrocenyl compounds, including hyperbranched phloroglucin-based ferrocenyl polymer and phloroglucin-based ferrocenyl dendrimer (Generation0), were prepared by a convenient approach. Cyclic voltammograms were used to investigate their electrochemical properties, and we found that the scanning rate and solvent had remarkable effects on electro- chemical behavior of the compounds. These compounds showed electrochemical responses to the anions, and a selective recognition for H2PO4- over other anions was observed. (c) 2007 Wiley Periodicals, Inc.