Abstract: There is provided an ICG-loaded polymer nanoparticle that is dynamically stable, prevents the leakage of contained ICG and the resulting discoloration, and has a high molar absorbance coefficient. The particle contains a hydrophilic dye having a sulfonate group and a hydrophobic polymer, and the particle further contains at least one of a lipid having a positively charged region, a nicotinic acid derivative and a thiamine derivative.

Abstract: A particle includes a copolymer of lactic acid and glycolic acid, and at least one compound selected from silicon naphthalocyanine and derivatives of silicon naphthalocyanine, in which the particle has a particle size of 10 nm or more and less than 1000 nm.

Abstract: A particle includes a copolymer of lactic acid and glycolic acid, and at least one compound selected from silicon naphthalocyanine and derivatives of silicon naphthalocyanine, in which the particle has a particle size of 10 nm or more and less than 1000 nm.

Abstract: There is provided an ICG-loaded polymer nanoparticle that is dynamically stable, prevents the leakage of contained ICG and the resulting discoloration, and has a high molar absorbance coefficient. The particle contains a hydrophilic dye having a sulfonate group and a hydrophobic polymer, and the particle further contains at least one of a lipid having a positively charged region, a nicotinic acid derivative and a thiamine derivative.

Abstract: By multiplexing light-harvesting layer and complexing with hole transport films or electron transport films, a photoelectric device and a solar cell exhibiting highly efficient electricity generation property can be obtained.

Abstract: A method for multiphoton-ionizing an organic molecule supported by a solid carrier according to the present invention is a method characterized in that the carrier supporting an organic molecule is irradiated with a laser light having a pulse width of less than 1 nanosecond. As a laser having a pulse width of less than 1 nanosecond, such femtosecond lasers as titanium-sapphire lasers, fiber lasers and ytterbium-tungsten lasers are desirable.

Abstract: A recording layer of an optical recording medium is made of a polymer film containing a polymer solid, such as polymethyl methacrylate, as a main ingredient. The polymer film contains a dye to absorb light having a specific wavelength band, and the optical recording medium exhibits anisotropy in at least one of light absorption intensity and emission intensity by irradiating the recording layer with a linearly polarized light having the specific wavelength band and an arbitrary polarization direction. It is preferable that the specific wavelength band is included in a wavelength region of 350 nm to 450 nm.

Abstract: A detection unit of an optical pickup apparatus includes an optical element to simultaneously extract plural specified lights having a different polarization direction respectively in a separated state from light from an optical recording medium, and a light amount measurement unit to simultaneously perform light amount measurement on each of the plural specified lights extracted by the optical element. At the time of reproduction of information, reflected light from the optical recording medium in the case where reproducing light is irradiated, or emission light emitted from the optical recording medium by irradiation of reproducing light is sent to a detection unit.