Hiroshima University

Sumitomo Chemical Company, Limited

Jx Nippon Oil Energy Corporation

Sankyo Kasei Co., Ltd.

Itaru Osaka

Kazuo Takimiya

Kenichiro Ohya

Kunihito Miyake

Kenji Kohiro

Tsuyoshi Asano

Seunghun Eu

Kazuaki Kawashima

A photoelectric conversion element has a structure where a hole transport layer, a photoelectric conversion layer, and an electron transport layer are held between a first electrode and a second electrode. The photoelectric conversion layer is a bulk heterojunction layer, and fullerene or a fullerene derivative is used as an n-type organic semiconductor. As a p-type organic semiconductor, a polymer represented by the following Expression is used. In the Expression, R, R, R, and Reach independently represent any one of a branched alkyl group, a linear alkyl group, an alkyl ester group, a carboxy alkyl group, and an alkoxy group. Independently, X is any one of S, O, and N.

Polymer and photoelectric conversion element

A naphthobisthiadiazole derivative is represented by Formula 1. In Formula 1, Z is selected from a hydrogen atom, a boronic acid group, a boronic acid ester group, a trifluoroborate salt group and a triolborate salt group, and at least one Z is a boronic acid group, a boronic acid ester group, a trifluoroborate salt group or a triolborate salt group. The naphthobisthiadiazole derivative is an organoboron compound, and can be converted to various compounds by a Suzuki-Miyaura coupling reaction; thus, is applicable as a precursor of complex compounds. Using the naphthobisthiadiazole derivative, research, development, and practical applications of low molecular weight compounds and high-molecular compounds useful for various organic semiconductor materials and the like can be ensured. 

Naphthobisthiadiazole derivative

An intermediate for an acenedichalcogenophene derivative is expressed by formula (1) or formula (2). In the formulae (1) and (2), Arrepresents any one ring of a benzene ring, a naphthalene ring, or an anthracene ring having at least one of hydrogen thereof is substituted with a boronic acid group or a boronate ester group; Y represents an oxygen atom, a sulfur atom, or a selenium atom; and Z represents a substituent group. This intermediate for the acenedichalcogenophene derivative is capable of easily deprotecting the boronic acid group or the boronate ester group and allowing a substitution with a desired functional group, such that a desired synthesis of acenedichalcogenophene derivative, and further a desired synthesis of oligomers and polymers using this obtained acenedichalcogenophene derivative can be achieved.

Intermediate for acenedichalcogenophene derivative and method for synthesizing same

An object of the present invention is to provide a polymer compound providing high charge mobility. The polymer compound of the present invention has a repeating unit represented by the formula (1): wherein Arand Arare each an aromatic hydrocarbon ring, a heterocycle, or a fused ring of an aromatic hydrocarbon ring and a heterocycle; and R, R, Rand Reach represent a hydrogen atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, a substituted silyl group, an unsubstituted or substituted carboxyl group, a monovalent heterocyclic group, a cyano group or a fluorine atom.

Polymer compound, and thin film and ink composition each containing same

Growing community of inventors

Hiroshima, Japan

Itaru Osaka