Hokkaido University

Japan Science and Technology Corporation

Sony Corporation

Japan Science and Technology Agency

Adeka Corporation

Japan Polyethylene Corporation

Tamotsu Takahashi

Hiroyuki Shimizu

Takashi Seki

Takahiro Ohe

Noriyuki Kawashima

Kiyoshi Musha

Kiyohiko Nakajima

Ken-ichiro Kanno

Tetsuro Fukuda

Shi Li

Ken-Ichiro Kanno

The present invention provides a 6,13-dihalogen-5,14-dihydropentacene derivative and a method for production thereof. Compounds (b) and (c) are reacted through cross-coupling reaction in the presence of a metal compound and a lithiating agent to synthesize compound (d), which is then halogenated to thereby obtain a 6,13-dihalogen-5,14-dihydropentacene derivative (compound (e)). [wherein Xand Xare each a halogen atom, and R, R, R, R, R, R, R, R, Rand Rare each a hydrogen atom, an optionally substituted C-Chydrocarbon group, etc.]

6,13-dihalogen-5,14-dihydropentacene derivative and method for producing 6,13-substituted-5,14-dihydropentacene derivative using same

An organic semiconductor material is provided. The organic semiconductor material includes a polyacene derivative expressed by the following general formula (1): where each of Rto Rmay be independently the same substituents or different substituents but all of R, R, R, R, Rand Rmay never be hydrogen atoms at the same time, and where each of Rto Ris at least one kind of substituent selected from the group consisting of an aliphatic hydrocarbon group having a substituent and of which number of carbon atoms ranges of from 1 to 20, an aromatic hydrocarbon group having a substituent, a complex aromatic group having a substituent, a carboxyl group, a hydride, an ester group, a cyano group, a hydroxyl group, a halogen atom and a hydrogen atom. The organic semiconductor material can be dissolved into an organic solvent at low temperature (for example, room temperature) and is suitable for use with a coating process.

Organic semiconductor material, organic semiconductor thin film and organic semiconductor device

Materials for photoelectric conversion devices, consisting of polyacene derivatives represented by general formula (I) below; and photoelectric conversion devices made by using the materials. The materials for photoelectric conversion devices have excellent workability and productivity, exhibit low toxicity, are easily flexibilized, and have high photoelectric conversion efficiencies. In the formula, R, R, R, R, R, R, R, R, A, A, A, and Aare independent from each other, either the same or different, and each represents a hydrogen atom, a halogen atom, an optionally substituted hydrocarbon group having 1 to 40 carbon atoms, or the like. n is an integer of 1 or more.

Photoelectric conversion devices

A novel transition metal compound wherein the transition metal belongs to group 4 of the periodic table and the transition metal compound has a hydrogen atom ligand and three cyclopentadienyl ligands comprising at least one substituted cyclopentadienyl ligand. The novel transition metal compound can be used as a component of a catalyst exhibiting high activity for olefin polymerization and is characteristic in containing no halogen element.

Transition metal compound, catalyst for olefin polymerization and method for producing polyolefin

Polyarylene and method for production thereof

Process for producing pyridine derivative through reaction of azametallacyclopentadiene with alkyne

Growing community of inventors

Sapporo, Japan

Tamotsu Takahashi