Abstract: An object of the present invention is to provide a novel porphyrin complex having excellent light collection characteristics and a dye-sensitized solar cell using the porphyrin complex as a sensitizing dye. The porphyrin complex of the present invention as a means for achieving the object is characterized by comprising a porphyrin derivative and a metal atom. The porphyrin derivative has a carboxyaryl group, which is optionally substituted on the aryl ring, attached to at least one of four meso positions of a porphyrin ring optionally substituted at the ?-position and also has a diarylamino group, which is optionally substituted on one or both of the aryl rings, attached to at least either of a meso position adjacent thereto and a meso position opposite thereto.

Abstract: [Problem] The purpose of the present invention is to provide organic particles containing pharmaceutical particles of which the particles are small and the particle size distribution is narrow, and a manufacturing method for the same. [Solution] Provided are pharmaceutical multimeric particles of which the particles are small and the particle size distribution is narrow and which are characterized in being obtained by pouring into water a solution of a pharmaceutical multimer dissolved in a water-miscible organic solvent, and a manufacturing method for the pharmaceutical multimeric particles. Pharmaceutical dimeric particles thereof are characterized in being obtained by pouring into water a solution of a compound represented by general formula (I) dissolved in a water-miscible organic solvent.

Abstract: An object of the present invention is to provide a novel porphyrin complex having excellent light collection characteristics and a dye-sensitized solar cell using the porphyrin complex as a sensitizing dye. The porphyrin complex of the present invention as a means for achieving the object is characterized by comprising a porphyrin derivative and a metal atom. The porphyrin derivative has a carboxyaryl group, which is optionally substituted on the aryl ring, attached to at least one of four meso positions of a porphyrin ring optionally substituted at the ?-position and also has a diarylamino group, which is optionally substituted on one or both of the aryl rings, attached to at least either of a meso position adjacent thereto and a meso position opposite thereto.

Abstract: An object of the present invention is to provide a novel cationic photopolymerization initiator that efficiently absorbs light and generates protons. As a means of achieving the object above, a preferred cationic photopolymerization initiator of the present invention includes an initiator comprising a bismuthonium salt represented by the following general formula (II): Wherein R11, R12, and R13 may be the same or different and are each an optionally substituted monocyclic aryl group or an optionally substituted monocyclic heteroaryl group, R14 is an optionally substituted fused polycyclic aromatic group or an optionally substituted fused polycyclic heterocyclic group, and X? is an anion associated with a cation.

Abstract: An object of the present invention is to provide a novel cationic photopolymerization initiator that efficiently absorbs light and generates protons. As a means of achieving the object above, a preferred cationic photopolymerization initiator of the present invention includes an initiator comprising a bismuthonium salt represented by the following general formula (II): Wherein R11, R12, and R13 may be the same or different and are each an optionally substituted monocyclic aryl group or an optionally substituted monocyclic heteroaryl group, R14 is an optionally substituted fused polycyclic aromatic group or an optionally substituted fused polycyclic heterocyclic group, and X? is an anion associated with a cation.

Abstract: A photoresponsive electrode for a wet solar cell wherein on a metal film having fixed thereon a photoresponsive molecule such as, for example, a porphyrin derivative, there is fixed by vapor deposition a light-irradiating portion such as a prism or optical fibers, and the metal film is irradiated with a light via the light-irradiating portion at about the resonance incident angle .theta. of inducing surface plasmon resonance in the interface between the metal film and the light-irradiating portion, and a wet solar cell using the photoresponsive electrode. In the photoresponsive electrode, the reflection of the incident light at the metal film can be restrained and the photoresponsive molecule can be efficiently excited even by sunlight of a low energy and the wet solar cell has a very excellent photoelectric transformation efficiency.