The present invention provides: a novel production technique that enables production of a polymer whose molecular weight and molecular weight distribution are controlled and production of a polymer having a complicated structure in a desirably controlled manner using commercially available materials without using a radical polymerization initiator or a special material for use in living radical polymerization and without the need for strict polymerization conditions; and a radical polymerization initiating group-containing compound for use in the technique. The present invention relates to: a method for producing a polymer, the method including a polymerization step of mixing and warming (1) a radically polymerizable monomer, (2) an organic compound wherein at least one group that functions as a group for initiating polymerization of the monomer and that has a structure represented by formula 1 or formula 2 (X in the formula represents Cl or Br) is introduced in a molecule of the organic compound, and (3) an iodine-containing compound, thereby initiating, from the group having the structure, radical polymerization accompanied by a termination reaction; and the organic compound of (2) for use in the method.

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An eye-mountable device is provided that includes a plurality of rigid polymer layers separated by liquid crystal layers. Certain eye-mountable devices includes a first rigid polymer layer, a second rigid polymer layer, and a liquid crystal layer between the first and second rigid polymer layers. The liquid crystal layer has a refractive index that is electrically controllable between an ordinary refractive index and an extraordinary refractive index, and the first rigid polymer layer and second rigid polymer layer include materials having a refractive index similar to the ordinary refractive index of the liquid crystal layer. The first rigid polymer layer and second rigid polymer layer may also include a combination of monomer-derived units that provide cast-moldable materials with high oxygen permeability. Methods for fabricating the eye-mountable device and for changing the focal length of the eye-mountable device are also provided.

An eye-mountable device is provided that includes a plurality of rigid polymer layers separated by liquid crystal layers. Certain eye-mountable devices includes a first rigid polymer layer, a second rigid polymer layer, and a liquid crystal layer between the first and second rigid polymer layers. The liquid crystal layer has a refractive index that is electrically controllable between an ordinary refractive index and an extraordinary refractive index, and the first rigid polymer layer and second rigid polymer layer include materials having a refractive index similar to the ordinary refractive index of the liquid crystal layer. The first rigid polymer layer and second rigid polymer layer may also include a combination of monomer-derived units that provide cast-moldable materials with high oxygen permeability. Methods for fabricating the eye-mountable device and for changing the focal length of the eye-mountable device are also provided.

An eye-mountable device is provided that includes a plurality of rigid polymer layers separated by liquid crystal layers. Certain eye-mountable devices includes a first rigid polymer layer, a second rigid polymer layer, and a liquid crystal layer between the first and second rigid polymer layers. The liquid crystal layer has a refractive index that is electrically controllable between an ordinary refractive index and an extraordinary refractive index, and the first rigid polymer layer and second rigid polymer layer include materials having a refractive index similar to the ordinary refractive index of the liquid crystal layer. The first rigid polymer layer and second rigid polymer layer may also include a combination of monomer-derived units that provide cast-moldable materials with high oxygen permeability. Methods for fabricating the eye-mountable device and for changing the focal length of the eye-mountable device are also provided.

An eye-mountable device is provided that includes a plurality of rigid polymer layers separated by liquid crystal layers. Certain eye-mountable devices includes a first rigid polymer layer, a second rigid polymer layer, and a liquid crystal layer between the first and second rigid polymer layers. The liquid crystal layer has a refractive index that is electrically controllable between an ordinary refractive index and an extraordinary refractive index, and the first rigid polymer layer and second rigid polymer layer include materials having a refractive index similar to the ordinary refractive index of the liquid crystal layer. The first rigid polymer layer and second rigid polymer layer may also include a combination of monomer-derived units that provide cast-moldable materials with high oxygen permeability. Methods for fabricating the eye-mountable device and for changing the focal length of the eye-mountable device are also provided.

An object of the present invention is to provide an actinic ray-sensitive or radiation-sensitive resin composition, in which the cross-sectional shape of a pattern thus formed has excellent rectangularity and a dimensional variation of the line width of the pattern thus formed hardly occurs even over time after preparation. Furthermore, another object of the present invention is to provide a resist film, a pattern forming method, and a method for manufacturing an electronic device, each using the actinic ray-sensitive or radiation-sensitive resin composition.

The actinic ray-sensitive or radiation-sensitive resin composition of an embodiment of the present invention includes a resin having a polarity that increases through decomposition by an action of an acid, a compound that generates an acid upon irradiation with actinic rays or radiation, and a halogen-based solvent, in which a content of the halogen-based solvent is from 1 ppb by mass to 50 ppm by mass with respect to a total mass of the composition.

An object of the present invention is to provide an actinic ray-sensitive or radiation-sensitive resin composition, in which the cross-sectional shape of a pattern thus formed has excellent rectangularity and a dimensional variation of the line width of the pattern thus formed hardly occurs even over time after preparation. Furthermore, another object of the present invention is to provide a resist film, a pattern forming method, and a method for manufacturing an electronic device, each using the actinic ray-sensitive or radiation-sensitive resin composition.

The actinic ray-sensitive or radiation-sensitive resin composition of an embodiment of the present invention includes a resin having a polarity that increases through decomposition by an action of an acid, a compound that generates an acid upon irradiation with actinic rays or radiation, and a halogen-based solvent, in which a content of the halogen-based solvent is from 1 ppb by mass to 50 ppm by mass with respect to a total mass of the composition.

The present invention discloses a photochromic resin lens with a refractivity of 1.50 and a preparation method thereof. The lens comprises a resin monomer, a photochromic organic material, an initiator, an antioxidant and a photo stabilizer at a weight ratio of 100:0.01-0.1:1-10:0.1-0.9:0.1-0.9. The resin monomer is a mixture of a monofunctional acrylate, a difunctional acrylate and a tetrafunctional acrylate at a weight ratio of 10-80:10-50:10-50. In the present invention, a low-refractivity photochromic resin lens with a refractivity of 1.50 and an Abbe number of 58 is prepared. The lens does not contain toxic materials, is safer and more environmentally friendly to wear and produce, and has high Abbe number, clear imaging, high visible light transmittance, and high product pass rate. The visible light transmittance under UV irradiation is less than 20%, the color is deep, and the photochromic effect is good.

A block copolymer is provided. The block copolymer includes a first block including repeat units represented by formula (I), and a second block connected to the first block and including repeat units represented by formula (II) or (III). The disclosure also provides a method for preparing the block copolymer and a thin film structure including the same.

A composition includes two or more near infrared absorbing compounds having an absorption maximum in a wavelength range of 650 to 1000 nm and having a solubility of 0.1 mass % or lower in water at 23° C., in which the two or more near infrared absorbing compounds include a first near infrared absorbing compound having an absorption maximum in a wavelength range of 650 to 1000 nm, and a second near infrared absorbing compound having an absorption maximum in a wavelength range of 650 to 1000 nm which is shorter than the absorption maximum of the first near infrared absorbing compound, and a difference between the absorption maximum of the first near infrared absorbing compound and the absorption maximum of the second near infrared absorbing compound is 1 to 150 nm.