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Updated: May 20, 2025
Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes
Published on: January 30, 2015
Novel Fe(II)-Based Supramolecular Film Prepared by Interfacial Self-Assembly of an Asymmetric Polypyridine Ligand and
Xiya Chen1,2, Xiaomeng Sun2, Tingting Dai2
1College of Chemistry, Zhengzhou University, No. 100 of Kexue Road, Zhengzhou 450001, China.
Abstract:
An asymmetric two-arm polypyridine ligand 4'-{4-[4-(2,2'-dipyridyl)phenyl]}-2,2':6',2'-terpyridine (TPY-Ph-BPY) with double coordination units was synthesized using the one-step Suzuki reaction. The metallic supramolecular film was subsequently obtained by the Fe2+-induced self-assembly method at the CHCl3-H2O interface, which displayed a distinct flat and continuous morphology. The supramolecular film-coated ITO electrode demonstrated a reversible electrochemical redox behavior with pronounced color changes between purple and light green. Its solid-state electrochromic device had an optical contrast (ΔT%) of 26.2% at λmax = 573 nm with balanced coloring (tc = 2.4 s) and bleaching (tb = 2.6 s) times and a high current efficiency of 507.8 cm2/C. Moreover, good cycling stability with a long-term reversible color change was observed beyond 900 cycles. These results suggested the promising potential of the TPY-Ph-BPY-Fe(II) supramolecular film for electrochromic applications.
