Basf Se Corporation

Basf Se Ludwigshafen

Margherita Fontana

Pascal Hayoz

Beat Schmidhalter

Marta Fonrodona Turon

Marian Lanz

Jean-Charles Flores

Mathias Duggeli

Mahmoud Zaher Eteish

Philippe Bugnon

Gerardus De Keyzer

Mathieu G R Turbiez

Olivier Frederic Aebischer

Clemens Auschra

Kishor Kumar Mistry

Gabriele Baisch

Reinhold Öhrlein

Frank Bienewald

Bernd Lamatsch

Mathias Düggeli

Jean-Luc Budry

Marcel Hahn

Laurent Michau

Zhimin Hao

Urs Lehmann

Thomas Ruch

Andreas Mühlebach

Frank Oliver Heinrich Pirrung

Thomas Eichenberger

Stephan Burkhardt

Olivier Frédéric Aebischer

Andreas Gernandt

Peter Simmendinger

Thomas Giesenberg

Christoph Krebs

Vilas N Mumbaikar

Dario Perera

Mathieu Turbiez

Oliver Frédéric Aebischer

Matheiu G R Turbiez

Oliver Frederic Aebischer

Marta Fondrodona Turon

Mathieu G R Turbioz

The present invention relates to polymers comprising a repeating unit of the formula I, or III and their use as organic semiconductor in organic devices, especially an organic field effect transistor (OFET), or a device containing a diode and/or an organic field effect transistor. The polymers according to the invention have excellent solubility in organic solvents and excellent film-forming properties. In addition, high efficiency of energy conversion, excellent field-effect mobility, good on/off current ratios and/or excellent stability can be observed, when the polymers according to the invention are used in organic field effect transistors.

Diketopyrrolopyrrole polymers for use in organic field effect transistors

Disclosed is a composition comprising a charged particle of volume 5 nmto 50 million nmpreferably having an inorganic core of SiO, AIO, and/or TiO, or a core essentially consisting of an organic pigment and/or pigment derivative, and a counter ion which is separable from the particle and is not covalently linked to the particle, said counter ion comprising a silicon atom which is directly bound to a carbon atom. Preferably, said charged particle comprises a dye attached to said inorganic core and said counter ion comprises a (poly)siloxane moiety linked via suitable bridge members to a quaternary, positively charged, nitrogen or phosphorus atom, or to a moiety carrying an anionic functional group. Said composition may be used e.g. in the form of a homogenous dispersion in an electrophoretic display.

Charged particles

The present invention relates to compounds of the formula I wherein the substituents are as defined in claim, and their use as organic semiconductor in organic devices, like diodes, organic field effect transistors and/or a solar cells. The compounds of the formula I have excellent solubility in organic solvents. High efficiency of energy conversion, excellent field-effect mobility, good on/off current ratios and/or excellent stability can be observed, when said compounds are used in semiconductor devices or organic photovoltaic (PV) devices (solar cells).

Pyrrolopyrrole derivatives, their manufacture and use

Described is a pigment dispersion which is useful for electrophoretic displays comprising &#x3b1;) a bis-oxodihydro-indolylene-benzodifuranone colorant of the Formula (I) wherein the substituents are defined as in claim, &#x3b2;) a specific polymeric dispersant, and &#x3b3;) a solvent which is suitable for dispersions used in electrophoretic displays. Also described are novel colourants and dispersants. 

Black pigment dispersion

The present invention relates to the preparation and use of (colored) organic particles carrying electric charge as electrophoretic (image) displaying particles, to electrophoretic dispersions comprising the organic particles carrying electric charge, electrophoretic (image) devices (especially displays) comprising the colored organic particles carrying electric charge, to the novel functionalized particles, and to their use. The particles are obtainable according to a method represented by the reaction scheme as given in FIG.

Coloured organic electrophoretic particles

The present invention discloses the use of functionalized particles as electrophoretic displaying particles, wherein the functionalized particles are SiO, AlOor mixed SiOand AlOparticles comprising, covalently bound to an oxygen atom on the surface, a radical of formula (1), wherein Rand Rare independently of each other hydrogen, particle surface-O&#x2014;, or a substituent, n is 1, 2, 3, 4, 5, 6, 7 or 8, B is the direct bond or a bridge member, and D is the residue of an organic chromophore. 

Coloured particles for electrophoretic displays

The present invention relates to compounds of the formula (I) wherein the substituents are as defined in claim, and their use as organic semiconductor in organic devices, like diodes, organic field effect transistors and/or a solar cells. The compounds of the formula I have excellent solubility in organic solvents. High efficiency of energy conversion, excellent field-effect mobility, good on/off current ratios and/or excellent stability can be observed, when said compounds are used in semiconductor devices or organic photovoltaic (PV) devices (solar cells). 

The invention relates to an electrophoretic display, comprising electrodes and cells containing at least one kind of ionic, monochrome particles, a non-polar liquid and a dispersant, wherein the ionic, monochrome particles of at least one kind are essentially aggregates consisting of a carbon containing pigment and a cationic pigment orcationic pigment derivative, and the dispersantis selected from the group consisting of polyacrylates, polyesters, polyurethanes and copolymers, with the proviso that the cationic pigment or cationic pigment derivative is not a reaction product of carbonblack with diazotated procaine hydrochloride. In general, the whole quantity of the pigment and the main part, preferably at least 80%, most preferred from 95% to 100%, of the whole cationic pigment or cationic pigment derivative present within the cells is comprised in the aggregates, with essentially no pigment and only a minor part of the cationic pigment or cationic pigment derivative physically distinct from the aggregates.

Encapsulated dispersions comprising electrophoretically mobile organic colorants

The invention relates to an electrophoretic display, comprising electrodes and cells containing at least one kind of ionic, monochrome particles, a non-polar liquid and a dispersant, wherein the ionic, monochrome particles of at least one kind are essentially aggregates consisting of a carbon containing pigment and an anionic pigment or anionic pigment derivative, and the dispersant is selected from the group consisting of polyacrylates, polyesters, polyurethanes and copolymers. In general, the whole quantity of the pigment and the main part, preferably at least 80%, most preferred from 95% to 100%, of the whole anionic pigment or anionic pigment derivative present within the cells is comprised in the aggregates, with essentially no pigment and only a minor part of the anionic pigment or anionic pigment derivative physically distinct from the aggregates.

Growing community of inventors

Basel, Switzerland

Margherita Fontana