Riken Corporation

Nissan Chemical Industries Limited

National Institutes for Quantum Science and Technology

Nissan Chemical Corporation

Takuzo Aida

Yoshihiro Kudo

Yasuhiro Ishida

Taichi Nakazawa

Shingo Tamesue

Masataka Ohtani

Daigo Miyajima

Toshiaki Takeuchi

Takuya Maeyama

Kazuaki Fukasaku

Nobuhisa Fukunishi

Souichi Monma

Kenichi Ishikawa

Ichio Aoki

Yoshiko Koizumi

Kouki Akaike

Masuki Kawamoto

Hiroki Arazoe

Seunghyun Sim

Provided is a novel nanoparticle, a contrast agent for magnetic resonance imaging containing the same, and a ligand compound used for production of the nanoparticle. The present invention relates to a nanoparticle including: a metal particle containing iron oxide; and a ligand which is bound to a metal atom on a surface of the metal particle and is represented by formula (3): 

Nanoparticle, contrast agent for magnetic resonance imaging containing same, and ligand compound

An organic/inorganic composite hydrogel can be prepared only through mixing at a room temperature and that has high modulus of elasticity and a self-supporting property that allows a shape to be maintained in water, and a method produces the hydrogel. A hydrogel forming composition that is capable of forming a hydrogel having a self-supporting property, includes: a water-soluble organic polymer having an organic acid structure, an organic acid salt structure, or an organic acid anion structure; a silicate salt; a dispersant for the silicate salt; and a compound having or generating divalent or higher valent positive charge; a hydrogel formed of the composition, and a method for producing the hydrogel.

Hydrogel forming composition and hydrogel formed thereof

In order to provide g-CNcapable of being simply and easily handled, a g-CNfilm is produced by heating, as a starting material, a compound represented by XY, wherein Xis a guanidium ion or the like ion, and Yis an anion, to vaporize the compound or its reactant, and depositing the compound or the reactant over a surface of a base material heated, the surface carrying negative electric charges or having &#x3c0; electrons, so that the compound or the reactant is polymerized on the base material to generate g-CN.

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A radiation dosimetry gel is excellent in heat resistance, and a radiation dosimeter includes the radiation dosimetry gel as a material for measuring a radiation dose. A radiation dosimetry gel includes a water-soluble organic polymer (A) having an organic acid salt structure or an organic acid anion structure, a silicate (B), and a dispersant (C) for the silicate, and a radiation dosimeter includes the radiation dosimetry gel as a material for measuring a radiation dose.

Radiation dosimetry gel and radiation dosimeter comprising the same as material for measuring radiation dose

There is provided a method for bonding together hydrogels by interposing a polyalkylene glycol between the gel surfaces to be bonded together of hydrogels. A method for bonding together hydrogels of the same type or different types, the method including: interposing a polyalkylene glycol between gel surfaces to be bonded together of the hydrogels and joining together the gel surfaces.

Method for adhering hydrogels

There is provided a hydrogel having a self-supporting property that can be produced only through mixing at room temperature, and there is provided a method by which the hydrogel can be manufactured by using industrially easily available raw materials. A hydrogel-forming composition that is capable of forming a hydrogel having a self-supporting property, the hydrogel-forming composition characterized by including: a water-soluble organic polymer having an organic acid salt structure or an organic acid anion structure; a silicate salt; and a dispersant for the silicate salt, having a weight average molecular weight of 200 to 20,000 and having hydrolysis resistance.

Hydrogel forming composition and hydrogel produced therefrom

There is provided a self-supporting hydrogel that can be produced only through mixing at room temperature and that has a high mechanical strength. A hydrogel forming composition that is capable of forming a hydrogel having a self-supporting property, the hydrogel forming composition characterized by including: a water-soluble organic polymer having an organic acid salt structure or an organic acid anion structure; a silicate salt; a dispersant for the silicate salt; and a polyhydric alcohol, and having an extremely high mechanical strength.

Growing community of inventors

Wako, Japan

Takuzo Aida