A Typical Metal-Ion-Responsive Color-Tunable Emitting Insulated π-Conjugated Polymer Film
Takuro Hosomi
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorDr. Hiroshi Masai
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorProf. Dr. Tetsuaki Fujihara
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorProf. Dr. Yasushi Tsuji
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorCorresponding Author
Prof. Dr. Jun Terao
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorTakuro Hosomi
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorDr. Hiroshi Masai
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorProf. Dr. Tetsuaki Fujihara
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorProf. Dr. Yasushi Tsuji
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorCorresponding Author
Prof. Dr. Jun Terao
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
Search for more papers by this authorGraphical Abstract
Metal-ion sensor: An insulated π-conjugated polymer containing metal-binding sites was synthesized. The coordination of metal ions to these sites alters the electronic properties of the polymer considerably. As a consequence the emission wavelength of the polymer varies and the polymer acts as a sensor for metal ions.
Abstract
We report the synthesis of an insulated π-conjugated polymer containing 2,2′-bipyridine moieties as metal coordination sites. Metal coordination to the polymer enabled easy and reversible tuning of the luminescent color without changes to the main chain skeleton. The permethylated α-cyclodextrin (PM α-CD)-based insulation structure allowed the metalated polymers to demonstrate efficient emission even in the solid state, with identical spectral shapes to the dilute solutions. In addition, the coordination ability of the metal-free polymer was maintained in the solid state, resulting in reversible changes in the luminescent color in response to the metal ions. The synthesized polymer is expected to be suitable for application in recyclable luminescent sensors to distinguish different metal ions.
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