Abstract: Light-emitting composition and devices including the same, the composition including a fluorescent light-emitting material and a polymer having a conjugating repeat unit and a non-conjugating repeat unit in a backbone of the polymer, and in which the conjugating repeat unit provides at least one conjugation path between repeat units linked to it; the non-conjugating repeat unit reduces conjugation of the polymer as compared to a polymer in which the non-conjugating repeat unit is absent; and a triplet excited state energy level of the light-emitting material is higher than a triplet excited state energy level of the non-conjugating repeat unit.

Abstract: A sensor for detection of a biological analyte comprises: a bottom gate thin film transistor comprising a gate electrode (103); source and drain electrodes (107, 109); a dielectric layer (105) between the gate electrode and the source and drain electrodes; and a semiconductor layer (111) comprising an organic semiconducting material extending between the source and drain electrodes; a binding layer comprising an amphiphilic polymer comprising a binding group (115) adjacent to and in direct contact with the semiconductor layer; and a receptor (220) bound to the binding group.

Abstract: Composition which may be useful in an organic light emitting diode, the composition having a fluorescent light-emitting polymer with light-emitting repeat units, and a triplet-accepting unit mixed with the light-emitting polymer.

Abstract: A combined solar recharging thin-film charge storage device and a method of its manufacture, wherein charge generation and storage are achieved within the same multilayer stack by providing a layer which functions as a photoactive layer and at the same time comprises ions towards which it is ion-permeable and separates physical contact between two electrodes. Accordingly, a simple device structure is provided which may be manufactured easily and cost-efficiently and which allows easy integration with other components.

Abstract: A method of forming a sensor comprising a single layer or multilayer structure; a fluorinated layer having a fluorinated surface on the single layer or multiple layer structure; and a receptor having a fluorinated group on the fluorinated surface, the method comprising treating the fluorinated surface with a surfactant and either depositing the receptor having a fluorinated group onto the fluorinated surface from a formulation comprising one or more solvents in which the receptor is dissolved or dispersed, or depositing a fluorinated compound comprising a fluorinated group onto the fluorinated surface from a formulation comprising one or more solvents in which the fluorinated compound is dissolved or dispersed, and reacting the fluorinated compound or a derivative thereof with a receptor comprising a reactive group to form the receptor having the fluorinated group.

Abstract: Composition for use in an organic light-emitting device, the composition having a fluorescent light-emitting material and a triplet-accepting material subject to the following energetic scheme: 2×T1A>S1A>S1E, or T1A+T1E>S1A>S1E in which: T1A represents a triplet excited state energy level of the triplet-accepting material; TIE represents a triplet excited state energy level of the light-emitting material; S1A represents a singlet excited state energy level of the triplet-accepting material; and S1E represents a singlet excited state energy level of the light-emitting material; and in which light emitted by the composition upon excitation includes delayed fluorescence.

Abstract: This invention relates to a method for fabrication of electrode material in electronic devices by in situ-electrodeposition of metal or metalloid ions that are present in the device. In another aspect, the present invention relates to electronic devices and charge storage devices comprising the electrodes manufactured by said method. Furthermore, the present invention further relates to a method of enhancing charge injection in an electronic device or charge storage device comprising the steps of: pre-assembling an electronic device or charge storage device and subsequently applying an electric field to effect electrodeposition of an electrode layer in situ by reducing the metal or metalloid ions to a non-ionic state.

Abstract: A polymer comprising a repeat unit of formula (I): (I) wherein Ar6 and Ar7 each independently represent a substituted or unsubstituted aryl or heteroaryl group; Sp represents a spacer group comprising a chain of at least 2 aliphatic carbon atoms spacing Ar6 from Ar7; m is at least 1; and if m is greater than 1 then —(Ar7)m forms a linear or branched chain of Ar7 groups in which Ar7 in each occurrence may be the same or different.

Abstract: A method of forming a light-emitting device comprises: forming patterned portions of precursor material over a substrate, the edges of the patterned portions defining sidewalls; performing a shaping control process on the patterned portions of precursor material to control the sidewall profile to reduce the angle the sidewalls of the precursor material make with the substrate to less than 15 degrees; selectively applying from solution a conductive coating onto the portions of shaped precursor material so as to form a plurality of first conducting contacts such that an upper surface of said conductive coating follows the sidewall profile of the precursor material; forming a light-emitting layer over the conductive contacts and substrate, and forming a plurality of second conducting contacts over the light-emitting layer. The precursor material may comprises an activator catalyst and the conductive coating comprises a metal selectively applied to the shaped precursor material by electroless plating.

Abstract: A method of forming a crosslinked polymer comprising the step of reacting a crosslinkable group in the presence of a polymer, wherein: the crosslinkable group comprises a core unit substituted with at least one crosslinkable unit of formula (I): the crosslinkable group is bound to the polymer or is a crosslinkable compound mixed with the polymer; Ar is aryl or heteroaryl which may be unsubstituted or substituted with one or more substituents independently selected from monovalent substituents and a divalent linking group linking the unit of formula (I) to the core unit; and R is independently in each occurrence H, a monovalent substituent or a divalent linking group linking the unit of formula (I) to the core unit, with the proviso that at least one R is not H.

Abstract: A composition comprising a polymer and a phosphorescent material wherein the polymer comprises repeat units of formula (I): wherein A is a heteroaryl group containing a nitrogen atom, and A may be unusubstituted or substituted with one or more substituents; R1 in each occurrence is independently a substituent; and n is 0, 1, 2, 3 or 4.

Abstract: An electroluminescent device (20) having a first layer comprising a fluorinated first organic compound with one or more fluorene residues and soluble in a fluorinated solvent, the first layer being adjacent to a second layer having second organic compound that is insoluble in a fluorinated solvent, and methods and materials for making said device.

Abstract: Disclosed is a crosslinkable light-emitting composition comprising at least one host material, at least one phosphorescent light-emitting dopant, a first crosslinker comprising an unsaturated carbon-carbon bond group and a second crosslinker comprising a ring system capable of undergoing ring-opening crosslinking.

Abstract: A method of forming a light-emitting device comprises: forming patterned portions of precursor material over a substrate, the edges of the patterned portions defining sidewalls; performing a shaping control process on the patterned portions of precursor material to control the sidewall profile to reduce the angle the sidewalls of the precursor material make with the substrate to less than 15 degrees; selectively applying from solution a conductive coating onto the portions of shaped precursor material so as to form a plurality of first conducting contacts such that an upper surface of said conductive coating follows the sidewall profile of the precursor material; forming a light-emitting layer over the conductive contacts and substrate, and forming a plurality of second conducting contacts over the light-emitting layer. The precursor material may comprises an activator catalyst and the conductive coating comprises a metal selectively applied to the shaped precursor material by electroless plating.

Abstract: A polymer, for use in an organic light emitting device, comprises asymmetrically substituted repeat units of formula (I (a)): wherein R7 represents a substituent bound to the 9-carbon atom of the fluorene ring through a non-aromatic carbon atom, R8, R9 and R11 independently in each occurrence represent H or a substituent with the proviso that at least one R8 is not H; R10 independently in each occurrence is a substituent; and t in each occurrence is independently 0, 1, 2 or 3. R7 is preferably a linear alkyl substituted with one or more groups —(Ar6)w, wherein each Ar6 independently represents an optionally substituted aryl or heteroaryl group, and w is at least 1, for example 1, 2 or 3.

Abstract: A method of forming a layer of an electronic device, for example an organic light-emitting device, the method comprising the step of depositing a precursor layer comprising a compound of formula (I) and reacting the compound of formula (I) in a ring-opening addition reaction: Core-(Reactive Group)n??(I) wherein Core is a non-polymeric core group; and each Reactive Group, which may be the same or different in each occurrence, is a group of formula (II): wherein Sp1 independently in each occurrence represents a spacer group; w independently in each occurrence is 0 or 1; Ar in each occurrence independently represents an aryl or heteroaryl group; R1 in each occurrence independently represents H or a substituent, with the proviso that at least one R1 is a substituent; n is at least 1; and * is a point of attachment of the group of formula (II) to the Core; and wherein the compound of formula (I) reacts with itself or with a non-polymeric co-reactant.

Abstract: Composition having an organic semiconducting material and a triplet-accepting material of formula (I) with a triplet energy level lower than the triplet energy level of the organic semiconducting material, in which each Ar is optionally substituted aryl or heteroaryl group, n is 1-3, m is 1-5, q is 0 or 1, each R3 is H or a substituent, and each R4 is H or a substituent. Where R4 is not H, R4 and (Ar)m bound to the same carbon atom may be linked by a direct bond or a divalent group. Where n or m is at least 2, adjacent Ar groups may be linked by a divalent group. Where q=0, R3 is not H and is linked to (Ar)n by a direct bond or a divalent group.

Abstract: An organic light-emitting device comprising an anode; a cathode; a first light-emitting layer between the anode and the cathode; and a second light-emitting layer between the first light-emitting layer and the cathode, wherein: the first light-emitting layer comprises a hole-transporting material and a first phosphorescent material, the second light-emitting layer comprises a second phosphorescent material; and the lowest triplet excited state energy level of the hole-transporting material is: (a) lower than the lowest triplet excited state of the second phosphorescent material, and (b) the same as or higher than the lowest triplet excited state energy level of the first phosphorescent material.

Abstract: An organic light-emitting device comprising an anode; a cathode; a first light-emitting layer between the anode and the cathode; and a second light-emitting layer between the first light-emitting layer and the cathode, wherein: the first light-emitting layer comprises a hole-transporting material and a first phosphorescent material, the second light-emitting layer comprises a second phosphorescent material; and the lowest triplet excited state energy level of the hole-transporting material is: (a) lower than the lowest triplet excited state of the second phosphorescent material, and (b) the same as or higher than the lowest triplet excited state energy level of the first phosphorescent material.

Abstract: An organic light-emitting device comprising an anode; a cathode; and a first light-emitting layer between the anode and the cathode, wherein the first light-emitting layer comprises a fluorescent light-emitting material of formula (I): (Formula (I)) wherein Ar1 and Ar2 each independently in each occurrence is a substituted or unsubstituted aryl or heteroaryl group; n and m independently in each occurrence is 1, 2 or 3; R independently in each occurrence is a substituent; and Ar1 and Ar2 linked directly to the same N atom may be linked by a direct bond or a linking unit to form a ring; and wherein a first phosphorescent light-emitting material is provided in the first light-emitting layer or in a second light-emitting layer adjacent to the first light-emitting layer.