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Materials 2010, 3(6), 3729-3739; doi:10.3390/ma3063729

Article

Electrochemical Light-Emitting Gel

Nobuyuki Itoh

Research and Development Center, Dai Nippon Printing Co., Ltd. / 250-1 Wakashiba, Kashiwa, Chiba, 277-0871, Japan

Received: 11 May 2010; in revised form: 10 June 2010 / Accepted: 18 June 2010 / Published: 19 June 2010

Download PDF Full-Text [981 KB, Updated Version, uploaded 23 June 2010 09:04 CEST]

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Abstract: Light-emitting gel, a gel state electroluminescence material, is reported. It is composed of a ruthenium complex as the emitter, an ionic liquid as the electrolyte, and oxide nanoparticles as the gelation filler. Emitted light was produced via electrogenerated chemiluminescence. The light-emitting gel operated at low voltage when an alternating current was passed through it, regardless of its structure, which is quite thick. The luminescence property of the gel is strongly affected by nanoparticle materials. TiO₂ nanoparticles were a better gelation filler than silica or ZnO was, with respect to luminescence stability, thus indicating a catalytic effect. It is demonstrated that the light-emitting gel device, with quite a simple fabrication process, flashes with the application of voltage.

Keywords: gel; luminescence; electrochemical; ionic liquid; nanoparticle

Supplementary Files

• Supplementary File 1:

  Video: Electrochemical Light-Emitting Gel (MP4, 3183 KB)

  This video shows the fabrication procedure of the light-emitting gel device and the appearance of luminescence.

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