A 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 anode and the cathode is provided. The first light emitting layer comprises a metal complex represented by formula (1):

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In formula (1), M.sup.1 represents an iridium atom, n.sup.1 represents an integer of 1 or more, n.sup.2 represents an integer of 0 or more, n.sup.1+n.sup.2 is 2 or 3, ring R.sup.1A represents a triazole ring containing a nitrogen atom, E.sup.1, E.sup.11A, E.sup.12A, and a carbon atom, ring R.sup.2 represents an aromatic hydrocarbon ring, E.sup.1, E.sup.2, E.sup.11A, and E.sup.12A each represent a nitrogen atom, R.sup.11A and R.sup.12A represent an aryl group, R.sup.13A represents an aryl group, A.sup.1-G.sup.1-A.sup.2 represents an anionic bidentate ligand, A.sup.1 and A.sup.2 each represent a nitrogen atom, and G.sup.1 represents a single bond.

A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer, wherein the polymer has an anisotropy of no more than 0.8 and wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone.

Nanoparticle compositions comprising nanoparticles formed from -conjugated cross-linked polymers are disclosed, together with their methods of manufacture and their applications. Owing to the nature of the cross-links formed therein, the nanoparticle compositions afford a high degree of manufacturing flexibility and control, as well as being amenable to facile purification for the purpose of imaging and electronics applications.

This invention is directed to perylene-diimide aromatic dianion compounds, process of preparation and uses thereof. The perylene-diimide aromatic dianion compounds of this invention are stable in aqueous solution and can be used for photofunctional and electron transfer systems in aqueous phase. This invention is also directed to supramolecular polymers derived from perylene-diimide compounds and mixtures thereof, and to uses thereof.

This invention is directed to separation, optimization and purification of nano-materials using self-assembled perylene diimide membranes, wherein said perylene diimide membrane is recyclable.

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):

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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.

Provided is a light emitting device which is excellent in external quantum efficiency. The light emitting device comprises an anode, a cathode, a first light-emitting layer provided between the anode and the cathode, and a second light-emitting layer provided between the anode and the cathode. The first light-emitting layer is a layer obtained by using a polymer compound comprising a constitutional unit having a cross-linkable group and a phosphorescent constitutional unit, and the second light-emitting layer is a layer obtained by using a composition comprising a non-phosphorescent low molecular weight compound having a heterocyclic structure and at least two phosphorescent compounds.

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. ##STR00001##

The invention relates to hybrid compositions comprising at least one cyclic olefin monomer composition: at least one resin composition polymerizable by addition or condensation polymerization; and, optionally, at least one additive. The invention also relates to articles of manufacture made from the hybrid compositions of the invention, and methods of making the articles. The invention also relates to coating compositions comprising the hybrid compositions of the invention, and to objects or substrates coated with the coating compositions of the invention, which may then be cured. The invention also relates to methods of coating the objects or substrates with the coating compositions of the invention. The invention further relates to the use of the hybrid compositions of the invention as adhesives.

The present disclosure relates to materials for radical-initiated activation of a latent catalyst for ring-opening metathesis polymerization (ROMP). The present disclosure also relates to uses of the materials, e.g., in 3D printing.