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Updated: Sep 23, 2025

Synthetic Methodology for Asymmetric Ferrocene Derived Bio-conjugate Systems via Solid Phase Resin-based Methodology
Published on: March 12, 2015
The first colorimetric receptor for the B4O7 2- anion based on nitro substituted phenanthroimidazole ferrocene
1Department of Chemistry, Capital Normal University Beijing 100048 P. R. China cnuwjc@cnu.edu.cn.
Abstract:
Four phenanthroimidazole ferrocene derivatives (2a-2d) were designed, synthesized and characterized by 1H NMR, 13C NMR and high-resolution mass spectroscopy (HRMS). Recognition of 12 anions by 2a-2d was investigated by UV-Vis absorption analysis, showing that 2b and 2d sensed B4O7 2- selectively among the tested anions with an obvious color change observed. 1H NMR titrations and theoretical calculations demonstrated that 2b binds B4O7 2- through O⋯H hydrogen bonding and O⋯B interactions between the nitro moiety and the B4O7 2- anion.
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