Abstract: A method of producing an organic semiconductor device is provided in which a layer composed of an organic semiconductor having excellent crystallinity and orientation in a low-temperature region can be formed, and the device can be produced in the air.

Abstract: A method of producing an organic semiconductor device is provided in which a layer composed of an organic semiconductor having excellent crystallinity and orientation in a low-temperature region can be formed, and the device can be produced in the air.

Abstract: A method of producing an organic semiconductor device is provided in which a layer composed of an organic semiconductor having excellent crystallinity and orientation in a low-temperature region can be formed, and the device can be produced in the air.

Abstract: A method for producing highly purified fused aromatic ring compounds with high yield by a simpler method. A method for producing a fused aromatic ring compound comprising irradiating the bicyclo compound containing at least one bicyclo ring represented by formula (1) in a molecule with light to detach a leaving group X from a residual part to form an aromatic ring: wherein R1 and R3 each denotes a group to form an aromatic ring or a heteroaromatic ring which may be substituted, together with a group to which each thereof is bonded; R2 and R4 each denotes a hydrogen atom, an alkyl group, an alkoxy group, an ester group or a phenyl group; and X is a leaving group, which denotes a carbonyl group or —N?.

Abstract: A method for producing highly purified fused aromatic ring compounds with high yield by a simpler method. A method for producing a fused aromatic ring compound comprising irradiating the bicyclo compound containing at least one bicyclo ring represented by formula (1) in a molecule with light to detach a leaving group X from a residual part to form an aromatic ring: wherein R1 and R3 each denotes a group to form an aromatic ring or a heteroaromatic ring which may be substituted, together with a group to which each thereof is bonded; R2 and R4 each denotes a hydrogen atom, an alkyl group, an alkoxy group, an ester group or a phenyl group; and X is a leaving group, which denotes a carbonyl group or —N?.

Abstract: Provided is a solubility-controallable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.

Abstract: There is provided a method for producing highly purified fused aromatic ring compounds with high yield by a simpler method. A method for producing a fused aromatic ring compound comprising irradiating the bicyclo compound containing at least one bicyclo ring represented by formula (1) in a molecule with light to detach a leaving group X from a residual part to form an aromatic ring: wherein R1 and R3 each denotes a group to form an aromatic ring or a heteroaromatic ring which may be substituted, together with a group to which each thereof is bonded; R2 and R4 each denotes a hydrogen atom, an alkyl group, an alkoxy group, an ester group or a phenyl group; and X is a leaving group, which denotes a carbonyl group or —N?.

Abstract: There is provided a method for producing a field effect transistor with a high field-effect mobility using a simple method for forming an organic semiconductor layer. A method for producing an organic field effect transistor comprising an organic semiconductor layer, comprising a step of forming the organic semiconductor layer by the photodecomposition of a bicyclic compound containing in a molecule thereof at least one bicyclic ring represented by formula (1): wherein R1 and R3 each denotes a group for forming an aromatic ring or a heteroaromatic ring which may have a substituent, together with a group to be bonded to R1 or R3; R2 and R4 each denotes a hydrogen atom, an alkyl group, an alkoxy group, an ester group or a phenyl group; and X is a leaving group which denotes carbonyl group or —N?.

Abstract: A method of producing an organic semiconductor device is provided in which a layer composed of an organic semiconductor having excellent crystallinity and orientation in a low-temperature region can be formed, and the device can be produced in the air.

Abstract: Provided is a solubility-controllable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.

Abstract: A method for forming an organic semiconductor film, comprising applying to a base material a bicyclo compound and inducing a retro-Diels-Alder reaction in the bicyclo compound.

Abstract: A method for forming a pattern of an organic semiconductor film comprises applying at least a bicyclo compound onto a base material, the bicyclo compound being converted to an organic semiconductor on the base material through retro-Diels-Alder reaction which removes a part of the bicyclo skeleton to allow extension of pi electron system.

Abstract: Provided is a solubility-controallable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.

Abstract: Provided is a solubility-controallable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.

Abstract: Provided is a solubility-controallable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.

Abstract: There is provided a method for producing highly purified fused aromatic ring compounds with high yield by a simpler method. A method for producing a fused aromatic ring compound comprising irradiating the bicyclo compound containing at least one bicyclo ring represented by formula (1) in a molecule with light to detach a leaving group X from a residual part to form an aromatic ring: wherein R1 and R3 each denotes a group to form an aromatic ring or a heteroaromatic ring which may be substituted, together with a group to which each thereof is bonded; R2 and R4 each denotes a hydrogen atom, an alkyl group, an alkoxy group, an ester group or a phenyl group; and X is a leaving group, which denotes a carbonyl group or —N?.

Abstract: There is provided a method for producing a field effect transistor with a high field-effect mobility using a simple method for forming an organic semiconductor layer. A method for producing an organic field effect transistor comprising an organic semiconductor layer, comprising a step of forming the organic semiconductor layer by the photodecomposition of a bicyclic compound containing in a molecule thereof at least one bicyclic ring represented by formula (1): wherein R1 and R3 each denotes a group for forming an aromatic ring or a heteroaromatic ring which may have a substituent, together with a group to be bonded to R1 or R3; R2 and R4 each denotes a hydrogen atom, an alkyl group, an alkoxy group, an ester group or a phenyl group; and X is a leaving group which denotes carbonyl group or —N?.

Abstract: Provided is a solubility-controallable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.

Abstract: Provided is a solubility-controallable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.

Abstract: N-[1-(Thienyl)alkyl]amine derivative of the formula: ##STR1## which has excellent herbicidal activity against lowland annual weeds and upland weeds, can be prepared by reacting a thiophen derivative of the formula: ##STR2## with an aldehyde of the formula:ACHOand an amide of the formula:NH.sub.2 --CO--Rin the presence of formic acid or a mixture of formic acid with phosphoric acid wherein Z is halogen, alkyl or alkoxy group; (n) is 0, 1 or 2; A is hydrogen or alkyl group; R is alkyl group, group of the formula: ##STR3## in which X and Y are hydrogen, alkyl group, haloalkyl group, alkoxy group, alkoxymethyl group or halogen, or group of the formula: ##STR4## in which Z and (n) are the same as defined above.