非对称多吡啶配体界面自组装制备新型Fe（II）基超分子膜及其电致变色性能。

IF 4.2 2区化学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Molecules Pub Date : 2025-03-19 DOI:10.3390/molecules30061376

Xiya Chen, Xiaomeng Sun, Tingting Dai, Hongwei Wang, Qian Zhao, Chunxia Yang, Xianchao Du, Xiaojing Xing, Xinfeng Cheng, Dongfang Qiu

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引用次数: 0

摘要

采用一步法铃木反应合成了具有双配位单元的不对称双臂多吡啶配体4′-{4-[4-（2,2′-二吡啶基）苯基]}-2,2′：6′，2′-三吡啶（TPY-Ph-BPY）。采用Fe2+诱导的自组装方法在CHCl3-H2O界面处获得了金属超分子膜，其形貌呈现出明显的平坦和连续。超分子膜包覆ITO电极表现出可逆的电化学氧化还原行为，颜色在紫色和浅绿色之间变化明显。该固态电致变色器件在λmax = 573 nm处的光学对比度（ΔT%）为26.2%，着色（tc = 2.4 s）和漂白（tb = 2.6 s）时间平衡，电流效率高达507.8 cm2/C。此外，在900次循环后，观察到良好的循环稳定性和长期可逆的颜色变化。这些结果表明TPY-Ph-BPY-Fe（II）超分子膜具有电致变色的应用前景。

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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 (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 λ_max = 573 nm with balanced coloring (t_c = 2.4 s) and bleaching (t_b = 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.

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来源期刊

Molecules 化学-有机化学

CiteScore

7.40

自引率

8.70%

发文量

7524

审稿时长

1.4 months

期刊介绍： Molecules (ISSN 1420-3049, CODEN: MOLEFW) is an open access journal of synthetic organic chemistry and natural product chemistry. All articles are peer-reviewed and published continously upon acceptance. Molecules is published by MDPI, Basel, Switzerland. Our aim is to encourage chemists to publish as much as possible their experimental detail, particularly synthetic procedures and characterization information. There is no restriction on the length of the experimental section. In addition, availability of compound samples is published and considered as important information. Authors are encouraged to register or deposit their chemical samples through the non-profit international organization Molecular Diversity Preservation International (MDPI). Molecules has been launched in 1996 to preserve and exploit molecular diversity of both, chemical information and chemical substances.