Abstract:
A self-healing composite material includes a polymer matrix, microcapsules filled with a ring-opening metathesis-active monomer (e.g., norbornene, norbornene derivatives such as ethylidene norbornene, or cyclooctadiene), and polymeric particles comprised of a polymer that is soluble in the monomer with which the microcapsules are filled and having catalytic endgroups derived from an olefin metathesis catalyst, such as a Grubbs'-type catalyst. In some embodiments, the polymer having catalytic endgroups is synthesized via solution polymerization of a ring-opening metathesis-active monomer (e.g., norbornene, norbornene derivatives, or cyclooctadiene) in the presence of an olefin metathesis catalyst (e.g., Grubbs' 1st generation catalyst). The polymer having catalytic endgroups may then be processed via a grinding operation, for example, to prepare the small polymeric particles. In other embodiments, the polymeric particles are synthesized directly as microparticles (e.g., microspheres, granules, beads, etc.) utilizing an analogous suspension polymerization.
Abstract:
A method of forming a polymer comprising a conjugated backbone and side-groups pendant from the conjugated backbone wherein the method comprises the steps of: polymerizing one or more monomers to form a precursor polymer comprising the conjugated backbone and precursor groups pendant from the conjugated backbone, and subsequently converting the precursor groups to the side-groups.
Abstract:
A polymer comprising units α, β, γ and δ wherein: unit α is present at 30 mole % to 60 mole % and is an optionally substituted arylene; unit β is present at 1 mole % to 30 mole % and is a unit comprising an optionally substituted fluorene; unit γ is present at 1 mole % to 40 mole % and comprises aryl substituted nitrogen, or an optionally substituted triazine; unit δ is present at 0.5 mole % to 15 mole % and comprises an iridium complex; and optionally up to 20 mole % of other units if the total of α, β, γ and δ is less than 100 mole %.
Abstract:
A method of forming a polymer comprising a conjugated backbone and side-groups pendant from the conjugated backbone wherein the method comprises the steps of: polymerising one or more monomers to form a precursor polymer comprising the conjugated backbone and precursor groups pendant from the conjugated backbone, and subsequently converting the precursor groups to the side-groups.
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 translation:一种包含聚合物和磷光材料的组合物,其中所述聚合物包含式(I)的重复单元:其中A是含有氮原子的杂芳基,A可以被一个或多个取代基取代或取代; R 1在每次出现时独立地为取代基; n为0,1,2,3或4。
Abstract:
A light-emitting composition comprises a polymer and a phosphorescent light-emitting material. The polymer comprises conjugating repeat units of formula (I) and up to 20 mol % of conjugation-blocking repeat units of repeat units of formula (II): Ar1 represents an aryl or heteroaryl group; R1, which may be the same or different in each occurrence, is a substituent; p is 0 or an integer; Ar2 in each occurrence independently represents a substituted or unsubstituted aryl or heteroaryl group; and Sp1 represents an acyclic spacer group that does not provide any conjugation path between the two groups Ar2. Optionally, p is 0, 1, 2, 3 or 4 and each R1 is a non-polar substituent. Each R1 is advantageously selected from C1-30 hydrocarbyl substituents. A light-emitting device comprises an anode, a cathode and a light-emitting layer between the anode and the cathode, the light-emitting layer comprising a light-emitting composition as described.
Abstract:
An organic light-emitting device (100) comprising an anode (103); a cathode (109); a light-emitting layer (107) between the anode and the cathode; a first hole-transporting layer (105A) comprising a first conjugated hole-transporting polymer between the anode and the light-emitting layer; and a second hole-transporting layer (105B) comprising a second conjugated hole-transporting polymer between the first hole-transporting layer and the light-emitting layer, wherein a lowest excited state energy level of the first hole-transporting polymer is lower than the lowest excited state energy of the second hole-transporting polymer.
Abstract:
A self-healing composite material includes a polymer matrix, microcapsules filled with a ring-opening metathesis-active monomer (e.g., norbornene, norbornene derivatives such as ethylidene norbornene, or cyclooctadiene), and polymeric particles comprised of a polymer that is soluble in the monomer with which the microcapsules are filled and having catalytic endgroups derived from an olefin metathesis catalyst, such as a Grubbs'-type catalyst. In some embodiments, the polymer having catalytic endgroups is synthesized via solution polymerization of a ring-opening metathesis-active monomer (e.g., norbornene, norbornene derivatives, or cyclooctadiene) in the presence of an olefin metathesis catalyst (e.g., Grubbs' 1st generation catalyst). The polymer having catalytic endgroups may then be processed via a grinding operation, for example, to prepare the small polymeric particles. In other embodiments, the polymeric particles are synthesized directly as microparticles (e.g., microspheres, granules, beads, etc.) utilizing an analogous suspension polymerization.
Abstract:
A composition comprising a polymer and at least one phosphorescent light-emitting dopant wherein: the polymer comprises a polymer backbone and charge transporting groups pendant from the polymer backbone; the polymer backbone is partially conjugated; and the polymer has a triplet energy level of at least 2.4 eV.
Abstract:
The invention relates to phosphorescent or luminescent conjugated polymers, whose emission is based on the phosphorescence of covalently bonded metal complexes, optionally combined with the fluorescence of the polymer chain. The invention also relates to a method for producing said polymers and to their use in electroluminescent assemblies.