Novel Fe(II)-Based Supramolecular Film Prepared by Interfacial Self-Assembly of an Asymmetric Polypyridine Ligand and Its Electrochromic Performance
An asymmetric two-arm polypyridine ligand 4′-{4-[4-(2,2′-dipyridyl)phenyl]}-2,2′:6′,2′-terpyridine (<b>TPY-Ph-BPY</b>) with double coordination units was synthesized using the one-step Suzuki reaction. The metallic supramolecular film was subsequently obtained by the Fe<sup>2+</...
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2025-03-01
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| author | Xiya Chen Xiaomeng Sun Tingting Dai Hongwei Wang Qian Zhao Chunxia Yang Xianchao Du Xiaojing Xing Xinfeng Cheng Dongfang Qiu |
| author_facet | Xiya Chen Xiaomeng Sun Tingting Dai Hongwei Wang Qian Zhao Chunxia Yang Xianchao Du Xiaojing Xing Xinfeng Cheng Dongfang Qiu |
| author_sort | Xiya Chen |
| collection | DOAJ |
| description | An asymmetric two-arm polypyridine ligand 4′-{4-[4-(2,2′-dipyridyl)phenyl]}-2,2′:6′,2′-terpyridine (<b>TPY-Ph-BPY</b>) with double coordination units was synthesized using the one-step Suzuki reaction. The metallic supramolecular film was subsequently obtained by the Fe<sup>2+</sup>-induced self-assembly method at the CHCl<sub>3</sub>-H<sub>2</sub>O 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 (Δ<i>T</i>%) of 26.2% at λ<sub>max</sub> = 573 nm with balanced coloring (<i>t</i><sub>c</sub> = 2.4 s) and bleaching (<i>t</i><sub>b</sub> = 2.6 s) times and a high current efficiency of 507.8 cm<sup>2</sup>/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 <b>TPY-Ph-BPY-Fe(II)</b> supramolecular film for electrochromic applications. |
| format | Article |
| id | doaj-art-bd7d007e98544afbabe478d05f4748f8 |
| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj-art-bd7d007e98544afbabe478d05f4748f82025-08-20T03:43:20ZengMDPI AGMolecules1420-30492025-03-01306137610.3390/molecules30061376Novel Fe(II)-Based Supramolecular Film Prepared by Interfacial Self-Assembly of an Asymmetric Polypyridine Ligand and Its Electrochromic PerformanceXiya Chen0Xiaomeng Sun1Tingting Dai2Hongwei Wang3Qian Zhao4Chunxia Yang5Xianchao Du6Xiaojing Xing7Xinfeng Cheng8Dongfang Qiu9College of Chemistry, Zhengzhou University, No. 100 of Kexue Road, Zhengzhou 450001, ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, ChinaAn asymmetric two-arm polypyridine ligand 4′-{4-[4-(2,2′-dipyridyl)phenyl]}-2,2′:6′,2′-terpyridine (<b>TPY-Ph-BPY</b>) with double coordination units was synthesized using the one-step Suzuki reaction. The metallic supramolecular film was subsequently obtained by the Fe<sup>2+</sup>-induced self-assembly method at the CHCl<sub>3</sub>-H<sub>2</sub>O 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 (Δ<i>T</i>%) of 26.2% at λ<sub>max</sub> = 573 nm with balanced coloring (<i>t</i><sub>c</sub> = 2.4 s) and bleaching (<i>t</i><sub>b</sub> = 2.6 s) times and a high current efficiency of 507.8 cm<sup>2</sup>/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 <b>TPY-Ph-BPY-Fe(II)</b> supramolecular film for electrochromic applications.https://www.mdpi.com/1420-3049/30/6/1376asymmetric polypyridine ligandliquid–liquid interface self-assemblysupramolecular polymerelectrochromism |
| spellingShingle | Xiya Chen Xiaomeng Sun Tingting Dai Hongwei Wang Qian Zhao Chunxia Yang Xianchao Du Xiaojing Xing Xinfeng Cheng Dongfang Qiu Novel Fe(II)-Based Supramolecular Film Prepared by Interfacial Self-Assembly of an Asymmetric Polypyridine Ligand and Its Electrochromic Performance Molecules asymmetric polypyridine ligand liquid–liquid interface self-assembly supramolecular polymer electrochromism |
| title | Novel Fe(II)-Based Supramolecular Film Prepared by Interfacial Self-Assembly of an Asymmetric Polypyridine Ligand and Its Electrochromic Performance |
| title_full | Novel Fe(II)-Based Supramolecular Film Prepared by Interfacial Self-Assembly of an Asymmetric Polypyridine Ligand and Its Electrochromic Performance |
| title_fullStr | Novel Fe(II)-Based Supramolecular Film Prepared by Interfacial Self-Assembly of an Asymmetric Polypyridine Ligand and Its Electrochromic Performance |
| title_full_unstemmed | Novel Fe(II)-Based Supramolecular Film Prepared by Interfacial Self-Assembly of an Asymmetric Polypyridine Ligand and Its Electrochromic Performance |
| title_short | Novel Fe(II)-Based Supramolecular Film Prepared by Interfacial Self-Assembly of an Asymmetric Polypyridine Ligand and Its Electrochromic Performance |
| title_sort | novel fe ii based supramolecular film prepared by interfacial self assembly of an asymmetric polypyridine ligand and its electrochromic performance |
| topic | asymmetric polypyridine ligand liquid–liquid interface self-assembly supramolecular polymer electrochromism |
| url | https://www.mdpi.com/1420-3049/30/6/1376 |
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