Abstract: A composition comprising a polymer; diethylene glycol diethyl ether; and a compound of formula (I); wherein: M+ is an alkali metal cation; X is Al or B; and R1 in each occurrence is independently a substituent wherein two R1 groups may optionally be linked to form a ring. A gel comprising the composition may be used as an electrolyte in a metal or metal ion battery.

Abstract: A solution comprising a solvent, a fluorinated polymer and an alkali or alkali earth metal salt wherein the fluorinated polymer is a partially unsaturated poly(alkylene) polymer.

Abstract: A battery comprising a compound of formula (I): (I) wherein X is Al or B; R1 in ach occurrence is independently a substituent; and two R1 groups may be linked to form a ring; and M+ is a cation, and wherein the battery further comprises a solvent wherein a ratio of solvent molecules: M+ ions is no more than 10:1. The battery may be a metal battery, e.g. a lithium battery.

Abstract: A metal battery or metal ion battery comprising an anode, a cathode and a compound of formula (I) disposed between the anode and the cathode: wherein X is Al or B; Ar1 in each occurrence is independently an unsubstituted or substituted arylene or heteroarylene group; Y is a divalent group; and M+ is a cation.

Abstract: A compound of formula (I): Core is a core group; X is Al or B; R1 in each occurrence is independently a substituent and two R1 groups may be linked to form a ring; L is a linking group; M+ is a cation; and n is at least 2. The compound may be used in a battery, e.g. a metal battery.

Abstract: A compound of formula (I), D1 and D2 are electron-donating groups; A2 and A3 are electron-accepting groups; B1 and B2 are bridging groups; x1 and x2 are 0, 1, 2 or 3; y1 and y2 are at least 1; z1 and z2 are 0, 1, 2 or 3; and A1 is a group of formula (II) wherein Ar1 is an aromatic or heteroaromatic group; and Y is O, S, NR4 or R1-C?C—R1 wherein R1 in each occurrence is independently H or a substituent wherein two substituents R1 may be linked to form a monocyclic or polycyclic ring and R4 is H or a substituent. The compound may be used as an electron-accepting material with an electron-donating material in an organic photodetector.

Abstract: A material comprising an electron-accepting unit of formula (I).

Abstract: A compound of formula (I): wherein: each X is independently O or S; R1 in each occurrence is independently H a substituent; R2 in each occurrence is independently a substituent; B in each occurrence is independently a bridging unit; n in each occurrence is independently 0 or 1; A1 in each occurrence is independently an electron-accepting group; Z is a direct bond or, together with R1, forms a monocyclic or fused ring; and the compound of formula (I) is substituted with at least one substituent of formula (II): -(L)p-[(OCH2CH2)r-R3]q ??(II) wherein: L is a linking group; p in each occurrence is independently is 0 or 1; r in each occurrence is independently an integer from 1 to 10; R3 is H or a substituent; and q is 1 if p is 0 and q is at least 1 if p is 1.

Abstract: A material comprising an electron-accepting unit of formula (I): Ar is an aromatic ring; Ar1 is a substituted or unsubstituted 5- or 6-membered heteroaromatic ring containing N and C ring atoms; when Ar1 is a substituted or unsubstituted 6-membered heteroaromatic ring, Ar2 is a substituted or unsubstituted 6-membered heteroaromatic ring wherein the ring atoms are selected from N and C; when Ar1 is a 5-membered heteroaromatic ring, Ar2 is a substituted or unsubstituted 5- or 6-membered heteroaromatic ring; Ar3 is a 5-membered ring or a substituted or unsubstituted 6-membered ring; Ar4 is a 5-membered ring or a substituted or unsubstituted 6-membered ring or is absent; Ar5 is a substituted or unsubstituted monocyclic or polycyclic group containing at least one aromatic or heteroaromatic ring; Ar6 is a substituted or unsubstituted monocyclic or polycyclic group containing at least one aromatic or heteroaromatic ring or is absent; and each X is independently a substituent bound to a C atom of Ar3, and where prese

Abstract: A compound of formula (I): (Core)n-(X)m wherein Core is a core group; n is 0 and m is 1, or n is 1 and m is at least 1; and X is a group of formula (II): wherein: R1, R3 and R5 are each independently H or a substituent; R2 and R4 are each a substituent; one of R1-R5 is a direct bond or divalent linking group linking the group of formula (II) to Core in the case where n is 1; x and y are 0, 1, 2, 3 or 4; and the compound of formula (I) is substituted with at least one ionic substituent. The compound may be used as an n-dopant to dope an organic semiconductor.

Abstract: A light-emitting polymer comprising a repeat unit of formula (I): R1-R4 are each independently H or a substituent; and Ar1 and Ar2 are each independently an aromatic or heteroaromatic group selected from formulae (IIa) and (IIb): The polymer may be formed from a non-luminescent or weakly luminescent monomer.

Abstract: A method of recording data to a layer (101) of a recording medium in which an organic luminescent precursor composition is irradiated with a first light beam (103) and a second light beam (105), the first light beam having a write wavelength for conversion of the organic luminescent precursor composition to an organic luminescent composition and the second light beam having a write inhibition wavelength for inhibiting conversion of the organic luminescent precursor composition to the organic luminescent composition. The second light beam has a central area and a surrounding area; an intensity of the second light beam in the central area being lower than an intensity of the second light beam in the surrounding area. The first light beam extends across the central area and the surrounding area of the second light beam surrounds the first light beam.

Abstract: A compound of formula (I) or (III) (Formulae (I), (III)) wherein: one Y is a substituent R1 bound directly to the fluorene unit of formula (I) by an sp3-hybridised carbon atom; the other Y is an aryl or heteroaryl group Ar1 that may be unsubstituted or substituted with one or more substituents; Ar2 is an arylene or heteroarylene group; R2 is a substituent; b is 0, 1, 2, 3 or 4; c is 0, 1, 2 or 3; and X is a group of formula (II): (Formula (II)) wherein Z is O or S; R3 independently in each occurrence is a substituent; each x is independently 0, 1, 2 or 3; and * is a bond to the fluorene unit of formula (I). The compounds may be used as host materials for phosphorescent dopants in organic light-emitting devices.

Abstract: A charge-transfer salt formed from a material comprising a repeat unit of formula (I) and an n-dopant: wherein BG is a backbone group of the repeat unit; R1 is a ionic substituent comprising at least one cationic or anionic group; n is at least 1; R2 is a non-ionic substituent; and m is 0 or a positive integer; the material further comprising a counterion balancing the charge of the cationic or anionic group.

Abstract: A composition comprising a semiconducting host compound having a glass transition temperature (Tg) of less than 100° C., and a phosphorescent compound wherein the phosphorescent compound is a metal complex of formula (II): M is Ir (III) or Pt (II). p is at least 1. q is 0, 1 or 2. L is a bidentate ligand substituted with one or two groups X wherein each X independently comprises an aromatic or heteroaromatic group Ar5; the sum of the number of rings comprised in the one or more X groups of formula (II) is at least 12; and at least 75% of the mass of each X is made up of the mass of the aromatic or heteroaromatic ring atoms of Ar5. L2 is a bidentate ligand which is different from L1.

Abstract: A battery cell formed of anode made from an n-type polymer and a cathode made from a p-type polymer with an electrolyte between the anode and the cathode. The anode and cathode are formed by depositing a compound that contains a non-volatile electrolyte that creates pathways in the deposited anode and the cathode.

Abstract: A charge-transfer salt formed from a material comprising a repeat unit of formula (I) and an n-dopant: wherein BG is a backbone group of the repeat unit; R1 is a ionic substituent comprising at least one cationic or anionic group; n is at least 1; R2 is a non-ionic substituent; and m is 0 or a positive integer; the material further comprising a counterion balancing the charge of the cationic or anionic group.

Abstract: A polymer comprising a repeat unit of formula (I): (I) wherein each Ar1 and each Ar2 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; each Cy independently represents a saturated heterocyclic or carbocyclic ring that may be unsubstituted or substituted with one or more substituents; n is 1, 2 or 3; and adjacent groups Ar2 may be linked by a divalent linking group in the case where n is 2 or 3. The polymer may be used as a charge-transporting material or light-emitting material in an organic light-emitting device.

Abstract: A method of forming an n-doped organic semiconductor, the method comprising: formation of an n-dopant reagent by reaction of a composition comprising two or more precursor units for forming the n-dopant reagent and an organic semiconductor; and n-doping the organic semiconductor. One or more of the precursor units may be a substituent of a polymeric repeat unit. The n-doped organic semiconductor may be an electron-injection layer of an organic light-emitting device.

Abstract: A phosphorescent metal complex comprising at least one ligand substituted with a group of formula (IIIa), (IIIb) or (IIIc): wherein Y is selected from O, S, a substituted carbon atom; and a substituted silicon atom; Z in each occurrence is independently selected from N and P; R4 independently in each occurrence is a substituent; R5 independently in each occurrence is H or a substituent; x independently in each occurrence is 0, 1, 2 or 3; y and z in each occurrence are independently 0, 1, 2, 3 or 4. The group of formula (IIIa), (Mb) or (IIIc) may be directly bound to the ligand or spaced apart therefrom by a spacer group. The phosphorescent metal complex may be used as a light-emitting material in an organic light-emitting device.