Electrochromic Bis(terpyridine)metal Complex Nanosheets

Kenji Takada, Ryota Sakamoto, Shi Ting Yi, Shunsuke Katagiri, Tetsuya Kambe, Hiroshi Nishihara

Research output: Contribution to journalArticlepeer-review

211 Citations (Scopus)

Abstract

A series of electrochromic metal complex nanosheets comprising 1,3,5-tris(4-(2,2′:6′,2″-terpyridyl)phenyl)benzene or 1,3,5-tris((2,2′:6′,2″-terpyridyl)ethynyl)benzene and Fe2+ or Co2+ was synthesized. The preparation of multilayered nanosheets was achieved by liquid/liquid interfacial synthesis using an organic ligand solution and an aqueous metal-ion solution. The resultant nanosheet had a flat, smooth morphology and was several hundreds of nanometers thick. Upon its deposition on an indium tin oxide (ITO) electrode, the nanosheet underwent a reversible and robust redox reaction (Fe3+/Fe2+ or Co2+/Co+) accompanied by a distinctive color change. Electrochromism was achieved in a solidified device composed of the nanosheet, a pair of ITO electrodes, and a polymer-supported electrolyte. The combination of Fe2+ and Co2+ nanosheets in one device - deposited on each ITO electrode - demonstrated dual-electrochromic behavior. (Chemical Equation Presented).

Original languageEnglish
Pages (from-to)4681-4689
Number of pages9
JournalJournal of the American Chemical Society
Volume137
Issue number14
DOIs
Publication statusPublished - 2015 Apr 15

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