Tokyo Institute of Technology

Toyota Jidosha Kabushiki Kaisha

Japan Science and Technology Agency

Sumitomo Metal Mining Company, Ltd.

Tomokazu Iyoda

Yukimitsu Suzuki

Kaori Kamata

Shinichi Matsumoto

Haruyuki Nakanishi

Atsushi Yamada

Hidekazu Arikawa

Kaori Ito

Sadayuki Asaoka

Ryoko Watanabe

A helical fine structure of the present invention is characterized by including: a phytoplankton having a helical shape and selected from a group of cyanobacteria called; and a surface modification layer formed on the phytoplankton. The surface modification layer includes at least one metal plating layer. Thereby, the helical fine structure can be utilized as an electric-wave shield or an absorber. Moreover, a method for producing the helical fine structure is characterized in that a prestep of a step of forming the surface modification layer on the phytoplankton having a helical shape includes a washing step with an organic solvent to remove an outer membrane from a surface of the phytoplankton.

Helical fine structure, method for producing the same, and electric-wave shield or absorber using the helical fine structure

Provided is a microphase-separated structure membrane including a block copolymer in which a hydrophilic polymer component and a hydrophobic polymer component are coupled to each other via a structural unit having a reactive group, an electron acceptor or electron donor, or a dye. In the microphase-separated structure membrane, a cylinder structure composed of the hydrophilic polymer component lies in a matrix composed of the hydrophobic polymer component and is oriented in the direction perpendicular to the membrane surface, and the structural unit having a reactive group, an electron acceptor or electron donor, or a dye lies between the matrix and the cylinder structure.

Microphase-separated structure membrane and process for producing the same

Nanoporous substrate with fine pores having a diameter from 3 to 40 nm arranged with less than 60 nm periodicity is prepared by a method comprising the steps of coating amphipathic block copolymer on a substrate, forming a film containing hydrophilic cylinders aligned perpendicularly to the surface of the film on a substrate, and immersing the substrate into a solution containing an etchant.

Method for producing a nanoporous substrate

A production method for polypyridinium having a narrow molecular weight distribution and a desired molecular weight is provided. Polypyridinium 3 having a narrow molecular weight distribution and a desired molecular weight is synthesized by allowing a pyridine derivative monomer 2 to polymerize on a polymerization initiator 1 such as a specially designed 4-halopyridinium and the like in the presence of a dissolution accelerating agent, such as tetrabutyl ammonium tetrafluoroborate, that dissolves the polymer formed in a solvent as in the chemical below. where Y represents an anion that dissolves in an organic solvent, X and Z represent halogen atoms, R represents hydrocarbon groups and the like and o is about 1 to 300.

Method for producing polypyridinium

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Tokyo, Japan

Tomokazu Iyoda