An object of the invention is to provide an organic semiconductor element having high mobility and excellent temporal stability under high humidity, and a manufacturing method thereof. Another object is to provide a novel compound suitable for an organic semiconductor. Still another object is to provide an organic semiconductor film having high mobility and excellent temporal stability under high humidity and a composition for forming an organic semiconductor film that can suitably form the organic semiconductor film. The organic semiconductor element according to the invention includes an organic semiconductor layer containing an organic semiconductor having a repeating unit represented by Formula 1. ##STR00001##

A conducting polymer which may have one redox couple and/or enhanced redox capacity. The polymer is a copolymer prepared by electropolymerizing a mixture of monomers.

An organic photovoltaic device includes an anode and a cathode. The organic photovoltaic device includes an active layer between the anode and the cathode. The active layer includes a p-type material. The p-type material includes a donor-acceptor (DA) polymer. An acceptor unit of the DA polymer includes a functionalized pyranopyran-dione compound or a functionalized naphthyridine-dione compound.

A conducting polymer which may have one redox couple and/or enhanced redox capacity. The polymer is a copolymer prepared by electropolymerizing a mixture of monomers.

Disclosed are methods, compositions, reagents, systems, and kits to prepare star polymers, as well as compositions and uses thereof. Various embodiments show that synthesis of these polymers contain low metal concentration to provide polymers for diverse biomedical applications including in vivo applications.

Provided are: an organic thin film transistor element including an organic semiconductor layer that includes an organic semiconductor compound, in which a content of one kind or two or more kinds of atoms selected from the group consisting of Li, Na, P, K, Fe, Pd, Sn, B, Cl, Br, and I in the organic semiconductor layer is 300 to 700 ppm; an organic semiconductor film-forming composition used for forming the organic semiconductor layer of the element; a method of forming an organic semiconductor film using the composition; and an organic semiconductor film formed of the composition.

There is provided an organic semiconductor composition containing the following (a) to (c), a method of manufacturing an organic thin film transistor using this composition, and an organic thin film transistor including (a) and (b) in an organic semiconductor layer: (a) an organic semiconductor polymer having a specific molecular weight and a specific structure; (b) an insulating polymer having a specific molecular weight; and (c) a solvent, in which a weight-average molecular weight Mw1 of the organic semiconductor polymer and a weight-average molecular weight Mw2 of the insulating polymer satisfy a relational expression below, and

0.1Mw1/Mw210

a content C1 mass % of the organic semiconductor polymer and a content C2 mass % of the insulating polymer in the organic semiconductor composition satisfy a relational expression below.

0.1C1/C210

The present invention relates to new semiconducting compounds having at least one optionally substituted dithieno[1,2,3]thiadiazole moiety. The compounds disclosed herein can exhibit high carrier mobility and/or efficient light absorption/emission characteristics, and can possess certain processing advantages such as solution-processability and/or good stability at ambient conditions.

The present invention relates to a diketopyrrolopyrrole polymer, which is an organic semiconductor compound for an organic electronic device, and a use thereof. The diketopyrrolopyrrole polymer according to the present invention is a novel organic semiconductor compound having high -electron stacking by introducing an electron donor compound, and an organic electronic device employing the same has excellent charge mobility and on/off ratio.

The invention provides for polymer structures and their preparation and resulting novel functionalities including open-shell character and high intrinsic conductivity with wide-range tenability. Electrical conductivity can be further modulated by introducing or blending with materials, fillers, dopants, and/or additives. The materials or resultant composites of the invention can be processed by various techniques into different forms to realize multiple applications.