Abstract: An organic semiconducting layer formulation containing an organic binder which has a permittivity, ?, at 1,000 Hz of 3.3 or less and a polyacene compound of Formula A: and processes for the preparation thereof and uses thereof in various electronic devices.

Abstract: The invention relates to novel oligomeric polyacene compounds, organic semiconducting formulations and layers comprising them, a process for preparing the formulation and layer and electronic devices, including organic field effect transistors (OFETs), comprising the same.

Abstract: The invention relates to novel polyacene compounds, organic semiconducting formulations and layers comprising them, a process for preparing the formulation and layer and electronic devices, including organic field effect transistors (OFETs), comprising the same.

Abstract: An organic semiconducting layer formulation containing an organic binder which has a permittivity, ?, at 1,000 Hz of 3.3 or less and a polyacene compound of Formula A: and processes for the preparation thereof and uses thereof in various electronic devices.

Abstract: A compound of formula 8 and uses thereof in various electronic devices and in a formulation for ink jet printing and in an organic semiconducting layer formulation.

Abstract: An organic semiconducting layer formulation containing an organic binder which has a permittivity, ?, at 1,000 Hz of 3.3 or less and a polyacene compound of Formula A: and processes for the preparation thereof and uses thereof in various electronic devices.

Abstract: A composition for use as an organic semiconducting (OSC) material, the composition comprising: (i) at least one higher molecular weight organic semiconducting compound having a number average molecular weight (Mn) of at least 5000, and (ii) at least one lower molecular weight organic semiconducting compound having a number average molecular weight (Mn) of 1000 or less. Use of the composition in an electronic device, e.g. FET or OLED.

Abstract: A compound of formula 9 and uses thereof in various electronic devices and in a formulation for ink jet printing and in an organic semiconducting layer formulation.

Abstract: The invention relates to novel oligomeric polyacene compounds, organic semiconducting formulations and layers comprising them, a process for preparing the formulation and layer and electronic devices, including organic field effect transistors (OFETs), comprising the same.

Abstract: The invention relates to novel polyacene compounds, organic semiconducting formulations and layers comprising them, a process for preparing the formulation and layer and electronic devices, including organic field effect transistors (OFETs), comprising the same.

Abstract: The invention relates to a compound of Formula (I): wherein: each of R1, R2, R3, R4, R5, R6 and R7 which may be the same or different on each triarylamine unit of Formula (1) and the same or different from one triarylamine unit of Formula (1) to another is independently hydrogen or an optionally substituted substituent; n is from 5 to 20; and a and b are each independently 0, 1, 2, 3 or 4. Also claimed are compositions comprising a compound of Formula (1) and a synthetic organic polymer resin, a process for preparing a compound of Formula (1), an organic semiconducting layer prepared from the composition, and electronic devices comprising the organic semiconducting layer.

Abstract: A field effect transistor in which a continuous semiconductor layer comprises: a) an organic semiconductor; and, b) an organic binder which has an inherent conductivity of less than 10?6Scm?1 and a permittivity at 1,000 Hz of less than 3.3 and a process for its production comprising: coating a substrate with a liquid layer which comprises the organic semiconductor and a material capable of reacting to form the binder; and, converting the liquid layer to a solid layer comprising the semiconductor and the binder by reacting the material to form the binder.

Abstract: A process of manufacturing an organic field effect device is provided comprising the steps of (a) depositing from a solution an organic semiconductor layer; and (b) depositing from a solution a layer of low permittivity insulating material forming at least a part of a gate insulator, such that the low permittivity insulating material is in contact with the organic semiconductor layer, wherein the low permittivity insulating material is of relative permittivity from 1.1 to below 3.0. In addition, an organic field effect device manufactured by the process is provided.

Abstract: A polymeric material comprises at least one repeat unit consisting substantially of a moiety of Formula 1: in which Y1 represents N, P, S, As and/or Se. Ar1 and Ar2, which may the same or different, represent independently a multivalent, optionally substituted aromatic group, and Ar3 represents independently a mono or multivalent, optionally substituted aromatic group. At least one terminal group is attached in the polymer to the Ar1, Ar2 and optionally Ar3 groups located at the end of the polymer chains, so as to cap the polymer chains and prevent further polymer growth. At least one terminal group is derived from at least one end capping reagent used in the polymerization to form the polymeric material to control the molecular weight thereof. A charge transport material comprising such polymers is useful in electroreprographic and electroluminescent devices. These polymers may be made by controlling their molecular weight with an end capping reagent.

Abstract: A polymeric material comprises at least one repeat unit consisting substantially of a moiety of Formula 1: 1

Abstract: A field effect transistor in which a continuous semiconductor layer comprises:

Abstract: The invention relates to a process for isolating, from a polymer comprising repeating units which are individually of Formula X in which Y is P or N, Ar1 & Ar2 are bivalent aromatic groups, Ar3 is a monovalent aromatic group, and the units of Formula X may be the same or different, a molecular weight fraction which is especially suitable for use as a charge transport material.

Abstract: A polymeric material comprises at least one repeat unit consisting substantially of a moiety of Formula 1: in which Y1 represents N, P, S, As and/or Se, Ar1 and Ar2, which may the same or different, represent independently a multivalent, optionally substituted aromatic group, and Ar3 represents independently a mono or multivalent, optionally substituted aromatic group. At least one terminal group is attached in the polymer to the Ar1, Ar2 and optionally Ar3 groups located at the end of the polymer chains, so as to cap the polymer chains and prevent further polymer growth. At least one terminal group is derived from at least one end capping reagent used in the polymerisation to form the polymeric material to control the molecular weight thereof. A charge transport material comprising such polymers is useful in electroreprographic and electroluminescent devices. These polymers may be made by controlling their molecular weight with an end capping reagent.

Abstract: Process for the free-radical polymerisation of olefinically unsaturated monomer(s) using a free-radical initiator, the polymerisation being performed in the presence of a compound for effecting molecular weight control, wherein the molecular weight control compound is a Co Il chelate of the following formula I ##STR1## wherein each group X, independently in each ring and in different rings, is a substituent selected from alkyl of 1 to 14 carbon atoms and cycloalkyl of 6 to 14 carbon atoms; n, independently in each ring, is 0 to 5 provided that in at least one ring, n is 1 to 5; Z, independently on each boron atom, is selected from F, Cl, Br, OH, alkoxy of 1 to 12 carbon atoms, aryloxy of 6 to 12 carbon atoms, alkyl of 1 to 12 carbon atoms, and aryl of 6 to 12 carbon atoms; or two Z groups taken together provide on one or both boron atoms a group --O--(Q)--O-- where Q is a divalent aryl or alicyclic linking group or an alkylene linking group, or two Z groups taken together on one or both boron atoms provide a

Abstract: There is provided a composite article which comprises a first substrate comprising a body of metal containing aluminium or galvanised steel, a second substrate and, interposed between said first and second substrates whereby to provide adhesive bonding between said substrates, an adhesive and 2.sup.1,3,4.sup.1,5,7-pentahydroxyflavone with the proviso that when either substrate is etched or anodised aluminium, the pentahydroxyflavone is not present thereon as a primer coat.