Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo

Matsushita Electric Industrial Co., Ltd.

Dai Nippon Printing Co., Ltd.

Pioneer Electronic Corporation

Chisso Corporation

Ayashi Noguchi

Shigeo Yasui

Hiroshi H Eguchi

Manabu Uchida

Ryohei Takiguchi

Shuichi Yanagisawa

Tatsuro Sakai

Sadaharu Suga

Makoto Satsuki

Komei Kafuku

Toshihiro Koike

Yasushi Aizawa

Makoto Fujiwara

Tsuneki Okazaki

Masashi Ono

Yoshinori Koyama

Fumio Mitsui

An objective of this invention is to extend the range of choosing organic dye compounds as radiation-absorbing agents in a variety of fields by providing a novel organic dye compound which absorbs short-wavelength visible radiation and exhibits a superior in optical resistance, solubility in solvents, and heat characteristics required in a novel field in which the organic dye compound is applied: The objective is attainable by providing a cyanine dye which has a specific structure and exhibits a major adsorption maximum at a wavelength longer than 400 nm in a solution.

Cyanine dye

Provided are an organic electroluminescent device having better performances in luminous efficiency, device life and driving voltage, a display unit equipped with the same and a lighting instrument equipped with the same. The organic electroluminescent device comprises an electron transport layer containing a specific arylamine-substituted coumarin compound.

Coumarin compound, material for light emitting device and organic electroluminescent device

Heat transfer sheet

An optical recording medium having a recording layer containing a particular cyanin coloring matter and a particular quencher. The material of the recording medium can be directly applied to the substrate without any damage to the substrate. The productivity of this recording medium is therefore high. This medium also has superior recording/reproduction characteristics.

Optical recording medium

A novel organic compound, 7,7,8,8-tetracyanoquinodimethane having a higher alkyl group containing at least ten carbon atoms, may be formed in a monomolecular layer or film by Langmuir-Blodgett's technique.

7,7,8,8-tetracyanoquinodimethane and method for preparing the same

Growing community of inventors

Okayama, Japan

Ayashi Noguchi