Nanoflakes of an aminoacid-based chiral coordination polymer: Synthesis, optical and electrochemical properties, and application in electrochemical sensing of H2O2

• Synthesis of nanoflakes of an aminoacid-based chiral CP.
• Optical and electrochemical properties resulting respectively from ligands and CuII.
• Good performance in enzyme-free electrochemical sensing of H2O2.

Nanoflakes of an aminoacid-based chiral coordination polymer (CP), [Cu2(tyr)2(bipy)]n, were synthesized successfully in the presence of surfactant, as evidenced by the XRD and SEM results. UV–vis absorption spectrometry and fluorescence spectrometry were used to investigate the optical properties of the CP, which was found to be mainly attributed to the ligands, while the forming of the CP caused only slight change. On the other hand, Cu(II) ions acted as electrocatalytic active sites of the CP, as evidenced by cyclic voltammetry. The CP also showed good performance in the electrochemical sensing of H2O2: sensitivity of 85.6 mA mol−1 L cm−2, linear range of 1.0×10−5–7.69×10−3 M, detection limit of 1.0×10−5 M (S/N=3), and fast response in mere 5 s.

Nanoflakes of an aminoacid-based chiral coordination polymer (CP), [Cu2(tyr)2(bipy)]n, were synthesized successfully and showed good performance in the electrochemical sensing of H2O2.Figure optionsDownload as PowerPoint slide