An organic electronic material containing a charge transport polymer for which, in a molecular weight distribution chart measured by GPC, the area ratio accounted for by components having a molecular weight of less than 20,000 is not more than 40%, and the area ratio accounted for by components having a molecular weight of 500 or less is not more than 1%.

The invention provides a production method of a polymer compound having a constitutional unit represented by the formula (3-1) and a constitutional unit represented by the formula (3-2), which contains a step of reacting a compound represented by the formula (1) and a compound represented by the formula (2) in the presence of a transition metal complex, a base and an organic solvent having a peroxide amount of 15 ppm by weight or less:

##STR00001## wherein Ar.sup.1 and Ar.sup.2 represent a divalent aromatic hydrocarbon group, a divalent heteroaromatic group, a group represented by the formula (4) or the like; X.sup.1 represents a bromine atom or the like; X.sup.2 represents B(OH).sub.2, a borane residue, a borate ester residue or the like;

##STR00002## wherein Ar represents a divalent aromatic hydrocarbon group, a divalent heteroaromatic group or the like, Ar represents an aryl group or a monovalent heteroaromatic group, m represents an integer of 0-2.

The present invention relates to a polycarbonate resin composition having excellent optical characteristics and a molded product comprising same and, more specifically, to a polycarbonate resin composition and a molded product comprising the composition, the composition comprising: as a basic resin, a polycarbonate; and, as a plasticizer component, a polyalkylene glycol adduct of an anhydrous sugar alcohol, a biomass-derived material, wherein the composition has excellent optical characteristics and processability as well as enhanced mechanical characteristics, such as tensile strength, and heat resistance.

Disclosed are a polymer including a structural unit represented by Chemical Formula 1, a structural unit represented by Chemical Formula 2, and a structural unit represented by Chemical Formula 3, an organic semiconductor material and a thin film including the polymer, and an electronic device including the thin film:

##STR00001## In Chemical Formulas 1 to 3, the definitions of R.sup.1 to R.sup.6, L.sup.1 to L.sup.6, and * are as described in the specification.

Provided herein is a narrow-range polyacetylene ester compound and a preparation method. The narrow-range polyacetylene ester compound has a structural formula as represented by formula (I). The method includes: in atmospheric carbon dioxide environment, a bifunctional alkyne monomer, carbon dioxide, and a dihalide monomer perform polymerization reaction by means of a combined action of a catalyzer and alkali, dissolve the product into an organic solvent, then add same to a precipitant for precipitation, collect precipitates, and dry same to the constant weight to obtain the narrow-range polyacetylene ester compound. The reaction is carried out in atmospheric carbon dioxide atmosphere, and carbon dioxide is involved as a monomer in the formation of a polymer. The obtained narrow-range polyacetylene ester compound has good thermal stability and excellent processability. Due to introduction of an aggregation-induced emission group, some polymers show a typical aggregation-induced emission performance.

##STR00001##

An electronic device, including an organic semiconductor, the organic semiconductor having a first polymer having a first molecular weight and a first length, and a second polymer having a second molecular weight and a second length, wherein the second length is longer than the first length.

There is a polymer which not only has high transparency and light resistance, but can also be manufactured as a protective film-bearing dry film. Provided is a polymer wherein the main chain contains a silphenylene backbone, an epoxy group-containing isocyanuric acid backbone, and a norbornene backbone, and does not contain a siloxane backbone.

A reactant composition for forming a polymer via metal-free ring-opening metathesis polymerization may comprise a stabilizer, a stabilizing reactant comprising a stabilizing moiety covalently bound to a reactant moiety, or both; wherein the stabilizer is a halogenated alcohol and the stabilizing moiety is derived from a halogenated alcohol. The reactant composition further comprises a strained cyclic unsaturated monomer; an initiator; a mediator; and optionally, one or more of a co-monomer, a crosslinker, and a chain transfer agent.

A copolymer, poly(thiophene-co-benzothiophene-co-dibenzothiophene), and method of preparation thereof. The copolymer, poly(thiophene-co-benzothiophene-co-dibenzothiophene), having a formula (I): ##STR00001##
wherein x=H or R, y=H or R, z=H or R, and n=500-58000, wherein R is selected from alkyl or alicyclic chain substituents, and Ar is an aromatic ring.