Multi-color electrochromism from coordination nanosheets based on a terpyridine-Fe() complex

A metal complex nanosheet was synthesized by the liquid-liquid interface self-assembly method from a star-shaped ligand of tris[4-(4′-2,2′:6′,2′′-terpyridyl)-phenyl]amine in organic solvents and metal ion Fe( ii ) in water solution. The as-prepared nanosheet possessed excessively smooth morphology w...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2019-10, Vol.48 (4), p.15121-15126
Main Authors: Kuai, Yu, Li, Weijun, Dong, Yujie, Wong, Wai-Yeung, Yan, Shuanma, Dai, Yuyu, Zhang, Cheng
Format: Article
Language:English
Subjects:
Coordination compounds
Electrochromism
Iron
Morphology
Nanosheets
Self-assembly
Thickness
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Summary:A metal complex nanosheet was synthesized by the liquid-liquid interface self-assembly method from a star-shaped ligand of tris[4-(4′-2,2′:6′,2′′-terpyridyl)-phenyl]amine in organic solvents and metal ion Fe( ii ) in water solution. The as-prepared nanosheet possessed excessively smooth morphology with a thickness of hundreds of nanometers. Adhering to an ITO glass, the nanosheet showed noticeable electrochromism from purplish red at 0 V to orange-yellow at 1.4 V and green at 1.6 V. Besides, the nanosheet exhibited outstanding stability with the optical contrast maintained at almost 100% of its original electrochemical activity over 500 cycles. The liquid-liquid interface self-assembly method was proven to be promising to prepare a polymeric metal complex for potential electrochromic applications. A new metal complex electrochromic nanosheet with multiple color electrochromism, fast switching speed and excellent cyclic stability was prepared controllably by the liquid-liquid interface self-assembly method.
ISSN:1477-9226
1477-9234
DOI:10.1039/c9dt02980j