Nippon Kayaku Kabushiki Kaisha

Tokyo Institute of Technology

Kazuki Niimi

Hidenori Yakushiji

Ryoutarou Morita

Yusuke Tone

Tatsuya Yamamoto

Yuichi Sadamitsu

Hirokazu Kuwabara

Kazuo Takimiya

Toshiyuki Ito

Yoichi Murakami

Satoshi Iwata

Masahiro Hamada

Taku Iino

Toshifumi Inouchi

Nozomi Onodera

Shunsuke Hori

Noriko Kiyoganagi

Eisei Kanoh

The present invention includes a fused polycyclic aromatic compound represented by general formula (1), where in formula (1), one among Rand Ris represented by general formula (2) and represents a substituent having three to five ring structures, and the other among Rand Rrepresents a hydrogen atom, where in formula (2), n represents an integer of 0-2, Rrepresents a divalent linking group obtained by removing two hydrogen atoms from benzene or naphthalene, Rrepresents a divalent linking group obtained by removing two hydrogen atoms from an aromatic ring of an aromatic hydrocarbon, and when n is 2, a plurality of R's may be the same as or different from each other, Rrepresents an aromatic hydrocarbon group.

Fused polycyclic aromatic compound

The present invention pertains to a material for a photoelectric conversion element for use in an imaging element, the material containing a compound represented by formula (1) (in formula (1), Rand Rindependently represent a substituted or unsubstituted fused heterocyclic aromatic group). The material can provide a photoelectric conversion element having excellent hole and electron leakage preventing properties, hole and electron transport properties, heat tolerance to processing temperatures, and visible light transparency.

Material for photoelectric conversion element for use in imaging element, and photoelectric conversion element including same

The present invention provides a material for photoelectric conversion elements for use in imaging elements which comprises a compound represented by the following formula (1). The material for photoelectric conversion elements for use in imaging elements, which comprises a compound represented by the following formula (1), is used to produce a photoelectric conversion element which is excellent in terms of hole- or electron-leakage prevention, thermal resistance to processing temperatures, transparency to visible light, etc. In formula (1), Rand Reach independently represent a substituted or unsubstituted aromatic group. 

Material for photoelectric conversion element for an imaging element, and photoelectric conversion element including same

There is provided an optical wavelength conversion element with a good temporal stability and such a high optical wavelength conversion efficiency that the element is viable even under sunlight or similar, low intensity light. Owing to these properties, the element is suited for use in solar cells, photocatalysts, photocatalytic hydrogen and oxygen generating devices, photon upconversion filters, and like articles. The optical wavelength conversion element is visually homogeneous and transparent and produced by dissolving and/or dispersing in an ionic liquid (C) a combination of organic photosensitizing molecules (A) and organic light-emitting molecules (B) that exhibits triplet-triplet annihilation. The organic photosensitizing molecules (A) have either an only one local maximum absorption wavelength or a plurality of local maximum absorption wavelengths, and either the single local maximum absorption wavelength or a maximum one of the plurality of local maximum absorption wavelengths is from 250 nm to 499 nm.

Optical wavelength conversion element containing ionic liquid, and article equipped with said optical wavelength conversion element

Provided are a novel heterocyclic compound represented by formula (1), and a field-effect transistor having a semiconductor layer comprising the aforementioned compound. Also provided is a method for producing an intermediate enabling the production of the aforementioned novel heterocyclic compound. (In the formula, Rand Rrepresent a hydrogen atom, a Calkyl group or an aryl group. However, when Reach independently represents a Calkyl group or an aryl group, Rrepresents a hydrogen atom or each independently represents an aryl group; and when Rrepresents a hydrogen atom, Reach independently represents an aryl group.) 

Heterocyclic dinaphtho thieno thiophene (DNTT) compounds for use as organic semiconductor thin films in field effect transistors and related methods

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Tokyo, Japan

Kazuki Niimi