Dai Nippon Toryo Co., Ltd.

Mitsubishi Yuka Fine Chemicals Co., Ltd.

National Institute for Materials Science

National Institute of Advanced Industrial Science and Technology

Toyo Ink Mfg. Co., Ltd.

Yuji Yoshida

Mitsutoshi Aritomi

Sadakazu Hokamura

Kiyoshi Inoue

Yasuo Iijima

Toshio Shinohara

Akihiro Kikuchi

Masayuki Chikamatsu

Kiyoshi Yase

Shuichi Kimura

Seiji Yamada

Reiko Azumi

Satoru Shimada

Atsushi Itakura

Ryoichi Nomura

Tatsumi Kimura

Hiroyuki Yanai

An organic transistor having a source electrode, a drain electrode, a gate electrode, and an organic semiconductor layer, wherein the organic semiconductor layer comprises a compound represented by the following general formula [1] or [3]: General Formula [1]  

Organic transistor

The present invention encompasses an organic field-effect transistor comprising an n-type organic semiconductor formed of a fullerene derivative having a fluorinated alkyl group which is expressed by the following chemical formula (wherein at least any one of R, Rand Ris a perfluoro alkyl group or a partially-fluorinated semifluoro alkyl group each having a carbon number of 1 to 20), and a field-effect transistor production method comprising forming an organic semiconductor layer using the fullerene derivative by a solution process, and subjecting the organic semiconductor layer to a heat treatment in an atmosphere containing nitrogen or argon or in vacuum to provide enhanced characteristics to the organic semiconductor layer. The present invention makes it possible to form an organic semiconductor layer by a solution process and provide an organic field-effect transistor excellent in electron mobility and on-off ratio and capable of operating even in an ambient air atmosphere.

Organic semiconductor material and organic device using the same

A alloy (Mg&#x2014;X) of metal (X) and Mg in a liquid phase is made to react with B in a solid phase at a low temperature to manufacture a superconductor, which contains a large amount of MgBpotential for MRI, linear motorcar, superconducting cavity, electric power transmission cable, high-magnetic field magnet for medical units, electric power storage (SMES), and the like and is formed in the shape of bulk, wire, and foil, by heat treatment performed at a low temperature for a short time and at low cost.

[object Object]

By rapidly heating a precursor wire having a multifilamentary structure in which multiple composite cores in which a composite compound of an Nb&#x2014;Ga compound and Nb is embedded in Nb are embedded in Nb, Ta, Nb-base alloy or Ta-base alloy as a matrix material to a temperature range of 1400 to 2100&#xb0; C. in 2 seconds, quenching the precursor wire at a rate of 5000&#xb0; C./second or larger, and subjecting the precursor wire to additional heat treatment at a temperature range of 600 to 850&#xb0; C. for 1 to 400 hours, a superconducting wire having a multifilamentary structure in which multiple composite cores in which a composite compound containing NbGa of a stoichiometric composition embedded in Nb are embedded in Nb, Ta, Nb-base alloy or Ta-base alloy as a matrix material is obtained.

Nb3Ga multifilamentary superconducting wire and process for preparing the same

A process for forming a corrosion resistant coating, which comprises (i) a step of priming a solvent-type coating composition on a substrate and drying it to form a prime coat, and (ii) a step of coating a radical-polymerizable and oxidation-polymerizable, room temperature curing type solventless coating composition on the prime coat and polymerizing it to form a cured coating.

Process for forming a corrosion resistant coating

A process for forming a moisture resistant coating, which comprises:

A process for forming a corrosion resistant high-build type coating, which comprises (i) a step of priming on a substrate a coating composition comprising (a) 100 parts by weight of a mixture composed of from 99.9 to 60% by weight of a vegetable oil and/or a phthalic alkyd resin, and from 0.1 to 40% by weight of tricyclodecene and/or its derivative, and (b) from 1 to 500 parts by weight of at least one member selected from the group consisting of an oxyacid salt, and metal lead and its oxide and salt, followed by drying it to form a prime coat, and (ii) a step of applying thereon a radical-polymerizable and oxidation-polymerizable, room temperature curing type solventless coating composition, and polymerizing it to form a cured coating film.

Process for forming a corrosion resistant high-build type coating

Growing community of inventors

Ibaraki, Japan

Yuji Yoshida