Related Experiment Video
Updated: Jan 7, 2026
Synthetic Methodology for Asymmetric Ferrocene Derived Bio-conjugate Systems via Solid Phase Resin-based Methodology
Published on: March 12, 2015
Cobalt(II) Coordination Polymers for Highly Sensitive and Selective Turn-On Fluorescence Detection of
Liuchang Wang1, Hongjiang Ren1, Jiangtao Li1
1The Key Laboratory for Surface Engineering and Remanufacturing in Shaanxi Province, Key Laboratory of Chemistry of New Material of Functional Inorganic Composites, School of Chemical Engineering, Xi'an University, Xi'an, Shaanxi, China.
Abstract:
Two novel Co(II)-based coordination polymers, [Co(HDNA)(bibp)(H₂O)]ₙ (CP1) and {[Co₃(DCPN)₂(4,4'-bibp)₃(H₂O)₄]}ₙ (CP2), were synthesized via hydrothermal reactions using H₃DCPN and different N-donor co-ligands. Structural analysis revealed that CP1 forms a 2D layered network, while CP2 adopts a 1D chain structure extended into a 3D supramolecular framework. Both CP1 and CP2 exhibited excellent fluorescence sensing abilities toward sulfamethoxazole (SMX), with strong enhancement responses. CP1 showed a linear Stern-Volmer relationship (R² = 0.9944) and a binding constant of 1.37 × 10⁴ M⁻¹, while CP2 gave R² = 0.9936 and K = 1.54 × 10⁴ M⁻¹. Both materials displayed high selectivity, anti-interference capacity, and good cycling stability, demonstrating their potential as reusable fluorescent sensors for SMX detection.
Related Concept Videos
03:02Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
02:42Valence Bond Theory
01:14Photoluminescence: Applications
01:11Aryldiazonium Salts to Azo Dyes: Diazo Coupling