Ciba Specialty Chemicals Corporation

Basf Se Corporation

Jean-Luc Budry

Beat Schmidhalter

Heinz Wolleb

Annemarie Wolleb

Heinz Spahni

Pascal Hayoz

Frank Bienewald

Margherita Fontana

Colin Morton

Jürgen Beyrich

Gerald Anthony Murphy

Wolfgang Freitag

Roland Zoelper

Rudolf Blattner

Michael Schulz

Christian Stern

Zhimin Hao

Urs Lehmann

Peter Aeschlimann

Jin Mizuguchi

Peter Sutter

Subramanian Vaidyanathan

Marta Fonrodona Turon

Mathias Düggeli

Mathias Duggeli

Tero Mustonen

Marta Fondrodona Turon

Mathieu Turbiez

Oliver Frédéric Aebischer

Oliver Frederic Aebischer

Matheiu G R Turbiez

Nikolai Kaihovirta

G&eacute;rald Giller

An organic semiconductor device selected from organic diodes, organic field effect transistors, and devices comprising an organic diode and/or organic field effect transistor and a method of producing such a device are provided. The organic semiconductor device comprises at least one semiconducting layer based on a diketopyrrolopyrrole (DPP) polymer. The semiconducting layer may effectively be protected against degradation by radiation and/or oxidation by adding at least one stabilizing agent selected from hydroxybenzophenones, hydroxyphenyl benzotriazoles, oxalic acid anilides, hydroxyphenyl triazines, hindered phenols and/or merocyanines to the DPP polymer layer. The stabilization is effective both during production and during usage of the device, while the device's electronic properties are retained. The stabilizing agent is preferably a UV absorbing agent or an antioxidant or anti-radical agent known from the field of organic polymer technology.

Organic semiconductor device and process for its production

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

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). 

Mixtures of metallocenyl phthalocyanines obtainable by reacting a mixture A comprising two phthalocyanines: with a metallocene derivative in the presence of a catalyst, and also oligomeric metallocenyl phthalocyanines, processes for preparing them, their use for, inter alia, optical recording and optical recording media.

Metallocenyl phthalocyanines as optical recording media

Mixtures of metallocenyl phthalocyanines obtainable by reacting a mixture A comprising two phthalocyanines (I) and (II) with a metallocene derivative in the presence of a catalyst, and also oligomeric metallocenyl phthalocyanines, processes for preparing them, their use for, inter alia, optical recording and optical recording media

The invention relates to an optical recording medium, comprising a substrate and a recording layer, wherein the recording layer comprises a compound of formula (I), wherein R, R, R, R, R, R, R, R, R, R, R, Rand Rare each independently of the others hydrogen, Gor C-Calkyl, C-Calkenyl, C-Calkynyl, C-Ccycloalkyl, C-Ccycloalkenyl, C-Caralkyl, C-Caryl, C-Cheteroaryl or C-Cheterocycloalkyl, each unsubstituted or substituted by one or more identical or different substituents G, wherein Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand Rand/or Rand Rcan independently of one another be bonded to one another in pairs separately or, when they contain substitutable sites, via a direct bond or via a &#x2014;CH&#x2014;, &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;NH&#x2014; or &#x2014;NC-Calkyl-bridge in such a manner that, together with the atoms and bonds indicated in formula (I), five- or six-membered, saturated, unsaturated or aromatic, unsubstituted or G-substituted rings are formed, Gis any desired substituent,?m-is an inorganic, organic organometallic anion, Yis a proton or a metal, ammonium or phosphonium cation, and m and n are each independently of the other a number from 1 to 5, and p and q are each independently of the other O or a number from 0.2 to 6, the ratio of p and q to one another, depending upon m and n and, as applicable, the number of charged G, being such that in formula (I) there is no excess positive or negative charge. Generally the optical recording medium according to the invention additionally comprises a reflecting layer. The recording media according to the invention exhibit high sensitivity and good playback characteristics, especially at high recording and playback speeds. The light stability is also excellent.

Fast-writable and precision-writable high-capacity optical storage media

There was found a metallocenyl-phthalocyanine or its metal complex of a divalent metal, oxometal, halogenometal or hydroxymetal, in which at least one of the four phenyl rings of the phthalocyanine contains, bound via a bridge unit E, at least one metallocene radical as substituent, E being composed of a chain of at least two atoms or atom groups selected from the group consisting of &mdash;CH &mdash;, &mdash;C(&boxH;O)&mdash;, &mdash;CH(C -C alkyl)&mdash;, &mdash;C(C -C alkyl) &mdash;, &mdash;NH&mdash;, &mdash;S&mdash;, &mdash;O&mdash; and &mdash;CH&boxH;CH&mdash;, as well as mixtures of the novel compounds which comprise, inter alia, isomers, a process for the production, the use and recording media comprising the novel compounds.

Metallocenyl-phthalocyanines

The invention relates to an optical storage medium comprising a substrate and a storage layer, wherein the storage layer comprises a compound of the formula (I) or (II)

Writable and erasable high-density optical storage media

The invention relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer, which recording layer consists essentially of a dye of the formula (I), ##STR1## in which R.sub.1 and R.sub.6 are hydrogen or unsubstituted or substituted alkyl, alkenyl, alkynyl, aralkyl or aryl,

High-capacity storage media

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Courroux, Switzerland

Jean-Luc Budry