Provided is a varnish for the formation of a charge-transporting thin film, said varnish including an organic solvent, a charge-transporting substance, and a 2,2,6,6-tetraalkylpiperidine-N-oxyl derivative represented by formula (T1)

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(in the formula, each R.sup.A independently represents a C1-20 alkyl group, and R.sup.B represents a hydrogen atom, a hydroxy group, an amino group, a carboxyl group, a cyano group, an oxo group, an isocyanato group, a C1-20 alkoxy group, a C2-20 alkylcarbonyloxy group, a C7-20 arylcarbonyloxy group, a C2-20 alkylcarbonylamino group or a C7-20 arylcarbonylamino group).

Provided are a polymer semiconductor including a first structural unit represented by Chemical Formula 1 and a second structural unit represented by Chemical Formula 2, a stretchable polymer thin film including the same, and an electronic device.

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Definitions of Chemical Formulas 1 and 2 are as described in the detailed description.

An object of the present invention is to provide a composition for forming an organic semiconductor film that is excellent in printing properties and makes is possible to prepare an organic thin film transistor excellent in mobility and insulation reliability. Another object of the present invention is to provide an organic thin film transistor, electronic paper, and a display device. The composition for forming an organic semiconductor film of the present invention contains an organic semiconductor material, a phenolic reductant, a polymer compound having a weight-average molecular weight of equal to or greater than 500,000, a surfactant, and an organic solvent having a standard boiling point of equal to or higher than 150° C., in which a ratio of a content of the organic semiconductor material to a content of the polymer compound is 0.02 to 10 based on mass, and a ratio of a content of the phenolic reductant to the content of the polymer compound is 0.1 to 5 based on mass.

The present invention pertains to: a Janus-type triptycene derivative which is capable of forming a self-assembled film which does not depend on the material quality of a substrate; a self-assembled film using said Janus-type triptycene derivative; a structure having said film on a surface thereof; a method for manufacturing said film; and an electronic device using said method.

Disclosed is an electrically conductive substance which comprises a complex containing rubeanic acid ligands and copper ions. The copper ions contained in the complex comprise copper (I) ions. The electrically conductive substance is produced by a production method which comprises mixing a rubeanic acid compound and a copper (I) compound in the presence of a base.

Crosslinked polymers and related compositions and related compositions, electrochemical cells, batteries, methods and systems are described. The crosslinked polymers have at least one redox active monomeric moiety having a redox potential of 0.5 V to 3.0 V with reference to Li/Li.sup.+ electrode potential under standard conditions or −2.54 V to −0.04 V vs. SHE and has a carbocyclic structure and at least one carbonyl group or a carboxyl group on the carbocyclic structure. The crosslinked polymers also include at least one comonomeric moiety with at least one of the at least one redox active monomeric moiety and/or the at least one comonomeric moiety has a denticity of three to six corresponding to a three to six connected network polymer, and provide stable, high capacity organic electrode materials.

Provided are a polymer semiconductor including a first structural unit represented by Chemical Formula 1 and a second structural unit represented by Chemical Formula 2, a stretchable polymer thin film including the same, and an electronic device. ##STR00001## Definitions of Chemical Formulas 1 and 2 are as described in the detailed description.

An object of the present invention is to provide a composition capable of manufacturing an organic thin film transistor having excellent carrier mobility even under low temperature conditions. The composition of the present invention contains a compound represented by Formula (1) and an alcohol represented by Formula (S1). ##STR00001##

Crosslinked polymers and related compositions and related compositions, electrochemical cells, batteries, methods and systems are described. The crosslinked polymers have at least one redox active monomeric moiety having a redox potential of 0.5 V to 3.0 V with reference to Li/Li.sup.+ electrode potential under standard conditions or −2.54 V to −0.04 V vs. SHE and has a carbocyclic structure and at least one carbonyl group or a carboxyl group on the carbocyclic structure. The crosslinked polymers also include at least one comonomeric moiety with at least one of the at least one redox active monomeric moiety and/or the at least one comonomeric moiety has a denticity of three to six corresponding to a three to six connected network polymer, and provide stable, high capacity organic electrode materials.

An object of the present invention is to provide a composition capable of manufacturing an organic thin film transistor having excellent carrier mobility even under low temperature conditions. The composition of the present invention contains a compound represented by Formula (1) and an alcohol represented by Formula (S1).

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