Disclosed is a bis-imide compound comprising two or more aryl moieties substituted with ethynyl moieties and the two or more aryl moieties each having one or more polar substituents. Further disclosed is a polymer composition comprising a copolymer polymerized from a monomer mixture of (a) one or more first monomers comprising a bis-imide compound comprising two or more aryl moieties substituted with ethynyl moieties and the two or more aryl moieties each having one or more polar substituents; and (b) one or more second monomers comprising two or more cyclopentadienone moieties. The polymer compositions exhibit favorable properties for use in electronics and displays applications.

Disclosed is a coating comprising a polymeric layer, wherein the polymeric layer comprises a reaction product of a first monomer comprising two or more aromatic acetylene groups and a second monomer comprising two or more cyclopentadienone groups, or a cured product of the reaction product. The coating may or may not additionally contain a crosslinker and/or a thermal acid generator. Optical thin films made from the coatings exhibit refractive indices that make them useful as interlayers for matching refractive indices between adjacent layers of display devices; thereby improving device output efficiency.

Provided is a polymer for an organic electroluminescent device, which has high luminous efficiency and high durability, and is applicable to a wet process. In an organic electroluminescent device having laminated, on a substrate, an anode, organic layers, and a cathode, a material containing the polymer for an organic electroluminescent device, which includes a polyphenylene main chain having a pentacyclic fused heterocyclic structure in a side chain thereof, is used in at least one layer of the organic layers.

Provided is a novel polymer capable of being used as a hole transfer material for an organic electronic device, particularly, an organic EL device.

The polymer of the present disclosure includes a repeating unit represented by Formula (1) as follows in 40 mol % to 100 mol % of the whole repeating unit forming the polymer.

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wherein at least one of R4 and R5 is an aromatic amino group.

The present disclosure relates to a conjugated polymer and a perovskite solar cell including the same, more particularly to a conjugated polymer capable of improving moisture stability and thermal stability. When the conjugated polymer according to the present disclosure is used in an organic electronic device, superior efficiency can be maintained for a long period of time.

A polymer comprising a repeating structure of formula (I): -D-X.sup.1-A-X.sup.2-. D is a conjugated electron-donating group of formula (II); A is a conjugated electron-accepting group; X.sup.1 and X.sup.2 are each independently a conjugated bridge group selected from phenylene, thiophene, furan, thienothiophene, furofuran, thienofuran, thiazole, oxazole, alkene, alkyne and imine, each of which may be unsubstituted or substituted with one or more substituents. The polymer has a highest occupied molecular orbital (HOMO) level as measured by square wave voltammetry of no more than 5.30 eV from vacuum level. The polymer may be used as an electron donor in an organic photodetector.

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A method for synthesizing polyolefin materials with a controlled degree of branching includes the following steps: polymerizing cyclic olefin monomers under catalyst conditions. The cyclic olefin monomer is shown in formula I, where n0, n is an integer. By changing monomers and reaction parameters such as reaction temperature, solvent type, catalyst concentration, monomer concentration and reaction time, the degree of branching, the molecular weight and molecular weight distribution of polyolefin can be controlled. Compared with the existing process, the present invention is a new polymerization process, which can prepare the hyperbranched polyolefin with precise and controllable branching structure. The polyolefin material prepared according to the present invention has advantages of a controlled degree of branching, low viscosity and good fluidity, which has broad application in coating, lubricant, polymer and process flow improvement technologies.

A light emitting device contains an anode, cathode, and two organic layers provided therebetween. One organic layer contains a phosphorescent compound, the second organic layer contains a block copolymer containing an end group, a block that binds to the end group and/or a block that does not bind to the end group, and a crosslinked product of the block copolymer. The non-terminal block contains a non-crosslinkable unit represented by the formula (X) and/or a non-crosslinkable unit represented by the formula (Z). At least one of X.sub.I>X.sub.II; Z.sub.I>Z.sub.II; X.sub.I+Z.sub.I>X.sub.II+Z.sub.II is satisfied when the total number of units having formula (X) and the total number of units having formula (Z) in the non-terminal block are X.sub.I and Z.sub.I, respectively, and the total number of units having formula (X) and the total number of units having formula (Z) in the terminal block are X.sub.II and Z.sub.II, respectively.

A block copolymer includes an end group, a block that binds to the end group, and a block that does not bind to the end group. The block that does not bind to the end group contains at least one non-crosslinkable constitutional unit represented by the formula (X) and/or at least one non-crosslinkable constitutional unit represented by the formula (Z). At least one of formulas (i) X.sub.I>X.sub.II, (ii) Z.sub.I>Z.sub.II and (iii) X.sub.I+Z.sub.I>X.sub.II+Z.sub.II is satisfied when the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that does not bind to the end group are represented by X.sub.I and Z.sub.I, respectively, and the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that binds to the end group are represented by X.sub.II and Z.sub.II, respectively.

The present disclosure relates to methods for preparing materials from heavy feedstocks. In particular, the disclosure provides a chemical process to convert heavy feedstocks with predominant polyaromatic hydrocarbon molecules or species, including the residues of petrochemical refining or extraction, into thermoset or thermoplastic materials that can be used alone or as a component in a composite material.