1229970-98-2Relevant academic research and scientific papers
Neutral redox-active hydrogen- and halogen-bonding [2]rotaxanes for the electrochemical sensing of chloride
Lim, Jason Y. C.,Cunningham, Matthew J.,Davis, Jason J.,Beer, Paul D.
, p. 17274 - 17282 (2014)
The first examples of redox-active ferrocene-functionalised neutral [2]rotaxanes have been synthesised via chloride anion templation. 1H NMR spectroscopic titrations reveal that these [2]rotaxane host systems recognize chloride selectively over other halides and oxoanions in highly-competitive aqueous media. By replacing the hydrogen bonding prototriazole units of the rotaxane axle component with iodotriazole halogen bond-donor groups, the degree of chloride selectivity of the [2]rotaxanes is modulated. Electrochemical voltammetric experiments demonstrate that the rotaxanes can sense chloride via cathodic perturbations of the respective rotaxanes' ferrocene-ferrocenium redox-couple upon anion addition.
Syntheses, characterization, and electrochemical anion recognition investigation of new N-5-ferrocenylisophthalic amino acid methyl esters
Liu, Wei,Zheng, Haijin,Du, Lingzhi,Chen, Bingyi,Song, Maoping
, p. 236 - 241 (2010/06/12)
The N-5-ferrocenylisophthalic amino acid methyl esters derivatives 4a-f were prepared by direct condensation of 5-ferrocenylisophthalic dichloride to the corresponding amino acid methyl esters. The compounds were fully characterized by a range of NMR spectroscopic techniques, mass spectrometry (ESI-MS) and cyclovoltammetry (CV). The cyclovoltammetric behavior of 4a-f showed one pair of well-defined and stable redox waves in potential range of 0.0-0.9 V at the GC electrode, which were attributed to the Fe/Fe+ redox process. Electrochemical investigations of 4a-f demonstrated that addition of H2PO4- resulted in large shifts of the respective Fe/Fe+ couple to more negative potentials (ca. 39-68 mV), which suggests that compounds 4a-f have good abilities in recognizing H 2PO4-. Moreover, 1H NMR spectroscopic anion titration studies of 4c and 4e strongly suggest the contributions of the amide and Ar-H protons as the important hydrogen donors in anion binding.
