Abstract: With a view to realizing a titanium oxide structure that has a large surface area and enables efficient transfer of ions and electrons by virtue of titanium oxide particles connected to one another, an object of the invention is to develop a material useful as an active material for dye-sensitized solar cells, and a process for producing the material; a porous titanium oxide composition and a process for producing the composition; and a photoelectric conversion element comprising the titanium oxide structure or porous titanium oxide composition.

Abstract: With a view to realizing a titanium oxide composite that has a large surface area and that enables efficient transfer of electrons by covering a surface of rod-like or fibrous carbon with a covering layer comprising titanium oxide particles connected to one another, an object of the invention is to develop a material useful as an active material for dye-sensitized solar cells, and a process for producing the material; a porous titanium oxide-covered carbon material composition, and a process for producing the composition; and a photoelectric conversion element comprising the titanium oxide-covered carbon material or porous titanium oxide-covered carbon material composition.

Abstract: With a view to realizing a titanium oxide structure that has a large surface area and enables efficient transfer of ions and electrons by virtue of titanium oxide particles connected to one another, an object of the invention is to develop a material useful as an active material for dye-sensitized solar cells, and a process for producing the material; a porous titanium oxide composition and a process for producing the composition; and a photoelectric conversion element comprising the titanium oxide structure or porous titanium oxide composition.

Abstract: Straight, nano-scale-order amorphous carbon tubes having a long-term stable ability for storing various kinds of gases and being stable in shape, and a novel process for producing said carbon tubes with high purity, high yield and high mass-productivity are provided. The amorphous nano-scale carbon tubes are prepared by subjecting a heat-decomposable resin having a decomposition temperature of 200 to 900° C. to an excitation treatment in the presence of a metal powder and/or a metal salt, or by subjecting a carbon material containing —C?C— and/or ?C? to a heat-treatment at 3000° C. or lower.

Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.

Abstract: The invention has as an object proving a carbon nanomaterial fabrication method that can continuously mass-produce a high purity carbon a nanomaterial. The tube-shaped or fiber-shaped carbon nanomaterial having carbon as the main constituent is fabricated with a compound that includes carbon (raw material) and an additive that includes a metal by using a fluidized bed reactor.

Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.

Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.

Abstract: The invention has as an object proving a carbon nanomaterial fabrication method that can continuously mass-produce a high purity carbon nanomaterial. The tube-shaped or fiber-shaped carbon nanomaterial having carbon as the main constituent is fabricated with a compound that includes carbon (raw material) and an additive that includes a metal by using a fluidized bed reactor.

Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.

Abstract: The invention is directed to a polysilane represented by the formula (1) wherein R is hydrogen atom, alkyl group, aryl group, alkoxy group, amino group or silyl group, R's may be the same or at least two of them may be different from each other; each hydroxyl group is in the p-position or m-position; and n is 2 to 10,000, preferably 13 to 8,500. The polysilane of the invention is important as materials for modified polycarbonates or like engineering plastics, resists or electrophotographic photoreceptors.

Abstract: A method for producing polysilanes comprising subjecting a dihalosilane of the general formula (wherein m is 1 to 3; R represents hydrogen atom, alkyl group, aryl group, alkoxy group, amino group or silyl group and two Rs are the same or different in case of m=1, four Rs are the same or at least two of them are different in case of m=2 and six Rs are the same or at least two of them are different in case of m=3; X represents halogen atom) to the action of Mg or Mg alloy in an aprotic solvent in the presence of Li salt and metal halide, thereby producing polysilane represented by the general formula (wherein R is as defined above corresponding to the starting material; n is 2 to 1000).

Abstract: There is disclosed a method of making polysilanes by polymerization of a silane in the presence of a catalyst comprising a phosphine-stabilized polyhydride of an early transition metal of Groups 4 to 7 of the Periodic Table and the resultant polysilanes which have a molecular weight higher than 1,000 and a polydispersity below about 2.

Abstract: The present invention provides a method for producing polysilane characterized in that starting halosilane is subjected to electrochemical reaction using Mg or Mg alloy as anode, lithium salt as supporting electrolyte and aprotic solvent as solvent, thereby producing polysilane. The present invention affords polysilane in a high yield, whose molecular weight is uniform and high enough to be cast into an excellent thin film, with an ease of handling, safety and a low cost ensured.

Abstract: A method for producing disilane characterized in that halosilane is subjected to electrochemical reaction using Al, Al alloy, Mg, Mg alloy, Cu, Cu alloy, Zn or Zn alloy as anode, lithium salt as supporting electrolyte, Al salt, Fe salt, Mg salt, Zn salt, Sn salt, Co salt, Pd salt, V salt, Cu salt, Ca salt, Na salt or K salt as current carrying aid, and aprotic solvent as solvent, thereby producing disilane.

Abstract: This invention provides(1) a method for producing a silicon network polymer which comprises subjecting a trihalosilane to the electrode reaction using a perchlorate as the electrolyte, an aprotic solvent as the reaction solvent, Mg, Cu or Al as one electrode material and an electronically conductive material which is the same as or different from said one electrode as a counter electrode material with the polarity of electrodes being switched from time to time, and(2) a method for producing a silicon network polymer which comprises subjecting a trihalosilane to concurrent sonication and electrode reaction using a perchlorate as the electrolyte, an aprotic solvent as the reaction solvent, Mg, Cu or Al as one electrode material and an electronically conductive material which is the same as or different from said one electrode as a counter electrode material with the polarity of electrodes being switched from time to time.

Abstract: The invention provides:(1) a process for preparing a polysilane, comprising subjecting a halosilane to an electrochemical reaction using an anode of magnesium, copper or aluminum;(2) a process for preparing a polysilane, comprising subjecting a halosilane to an electrochemical reaction under sonication using an anode of magnesium, copper or aluminum;(3) a process for preparing a polysilane, comprising subjecting a halosilane to an electrochemical reaction using one electrode of magnesium, copper or aluminum and the other electrode of an electroconductive material which is the same as or different from magnesium, copper or aluminum while changing over the electrode polarity at a specific time interval; and(4) a process for preparing a polysilane, comprising subjecting a halosilane to an electrochemical reaction under sonication using one electrode of magnesium, copper or aluminum and the other electrode of an electroconductive material which is the same as or different from magnesium, copper or aluminum while