Nippon Mitsubishi Oil Corporation

Hiroshi Imafuku

Yoshinori Nishikitani

Masaaki Kobayashi

Masaki Minami

Takaya Kubo

Keizo Iaki

Izuru Sugiura

Shinji Ohshima

An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compounds, which has both a structure exhibiting a cathodic electrochromic characteristic and a structure exhibiting an anodic electrochromic characteristic.

Electrochromic device

An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compound, which has both a structure exhibiting a cathodic electorchromic characteristic and a structure exhibiting an anodic electrochromic characteristic.

An ion conductive material comprising a mixture of a solvent, a supporting electrolyte, and an ultraviolet absorber and alternatively a polymerizable monomer and having an ion conductivity at 25&deg; C. of 1&times;10 or greater; the ultraviolet absorber being contained in the ion conductive material in such an amount that the transmissivity of electromagnetic rays having a wavelength from 300 to 360 nm and transmitting through an layer of the ion conductive material of 0.2 mm in thickness can be maintained 0.1% or below. The ion conductive material is suitable for use in various electrochromic devices.

Ion conductive material

The electrochromic device which has an ion conductive layer obtained by curing a composition comprising (a) a bipyridinium compound represented by formula (1), (b) a specific amine compound and (c) a precursor component of a polymeric solid electrolyte, disposed between two electrically conductive substrates at least one of which is transparent, said formula (1) being

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Yokohama, Japan

Hiroshi Imafuku