The present invention relates to formulations comprising at least one hyperbranched polymer which contains 30 to 70 mol % of at least one hole-transporting recurring unit A, 5 to 30 mol % of least one branching recurring unit B, 5 to 30 mol % of at least one further recurring unit C and 5 to 40 mol % of least one end group E, where the recurring units A, B and C are different from one another, and at least one organic solvent, characterised in that the formulation has a viscosity of ≤25 mPas. The present invention furthermore relates to the corresponding hyperbranched polymers and to processes for the preparation thereof. The present invention additionally also relates to the use of the hyperbranched polymers according to the invention in electronic or opto-electronic devices, and to electronic or opto-electronic devices containing these polymers

Disclosed are electrically conductive polymer compositions, and their use in organic electronic devices. The electrically conductive polymer compositions include an intrinsically electrically conductive polymer having Formula II: ##STR00001## where Q, R, R′, R″, m, n, and o are defined in the present disclosure.

A charge transport polymer containing a structural unit having an N-aryl phenoxazine skeleton is produced, and is used as a charge transport material.

A composition comprising: (a) a conductive polymer, (b) a resin having a solubility parameter of 9.0 to 12.0 (cal/cm.sup.3).sup.1/2, (c) a solvent, and (d) a phenolic compound.

It is an object of the present invention to provide a high molecular weight compound that has excellent hole injection and transport performance, is capable of blocking electrons, and is highly stable as a thin film. It is another object of the present invention to provide an organic EL element that includes an organic layer (thin film) made of the above-described high molecular weight compound, wherein the organic EL element has high light emission efficiency and a long lifespan. The high molecular weight compound according to the present invention includes a repeating unit represented by a general formula (3), that is constituted by a specific triarylamine structural unit and a specific bonding structural unit, and has a weight average molecular weight of 10,000 or more and less than 1,000,000 on a polystyrene basis.

A light emitting device contains an anode, a cathode, and two organic layer respectively containing metal complexes represented by formulas (1) and (2).

##STR00001##

M.sup.1 and M.sup.2 represent an iridium atom; n.sup.1 and n.sup.3 represent an integer of 1 or more; n.sup.2 and n.sup.4 represent an integer of 0 or more; Ring R.sup.1A represents a triazole ring; Ring R.sup.2 represents an aromatic hydrocarbon ring; E.sup.1, E.sup.2 and E.sup.11A to E.sup.13A represent a nitrogen or a carbon atom; R.sup.11A to R.sup.13A represent a substituent. At least one of E.sup.11A to E.sup.13A is a nitrogen atom, and at least one of R.sup.11A to R.sup.13A bonding to the nitrogen atom is a group represented by (Ar-1A). E.sup.L represents a carbon atom; Ring L.sup.1 represents a 6-membered aromatic hetero ring; Ring L.sup.2 represents an aromatic hydrocarbon ring; and A.sup.1-G.sup.1-A.sup.2 and A.sup.3-G.sup.2-A.sup.4 represent bidentate ligands.

##STR00002##

Ring A represents an aromatic hydrocarbon ring with substituent R.sup.2.

One embodiment relates to a charge transport polymer containing a molecular chain and terminal groups bonded to the molecular chain, wherein the terminal groups include a terminal group P containing a polymerizable functional group and a terminal group EW containing an aromatic hydrocarbon group substituted with an electron-withdrawing substituent, the terminal group P includes a terminal group represented by formula (P1) shown below, and among the carbon atoms contained in the ring of the aromatic hydrocarbon group, if the carbon atom that is bonded to the molecular chain is numbered 1, and numbers are assigned in order to the adjoining carbon atoms, then the electron-withdrawing substituent is bonded to a carbon atom numbered 1+2n (wherein n is an integer of 1 or greater).

##STR00001##

One embodiment relates to a charge transport polymer containing a molecular chain and terminal groups bonded to the molecular chain, wherein the terminal groups include a terminal group P containing a polymerizable functional group and a terminal group B containing an aromatic hydrocarbon group substituted with a branched or cyclic substituent, and among the carbon atoms contained in the ring of the aromatic hydrocarbon group, if the carbon atom that is bonded to the molecular chain is numbered 1, and numbers are assigned in order to the adjoining carbon atoms, then the branched or cyclic substituent is bonded to a carbon atom numbered 1+2n (wherein n is an integer of 1 or greater).

The present disclosure provides a technique capable of improving durability (particularly luminescence life-span) of an electroluminescence. In order to solve the above problems, the present disclosure provides an arylamine-fluorene alternating copolymer having a structural unit (A) represented by Chemical Formula (1).

##STR00001##

A high purity raw material is provided with which an organic EL material exhibiting high luminance, high efficiency, low voltage driving, and long lifetime can be synthesized. A method for purifying the raw material and a method for producing a light-emitting material synthesized using the high purity raw material are also provided. A means for solving the problem is a compound which is a raw material for synthesizing an organic EL material. In the compound, the content of an impurity having a molecular weight larger than the molecular weight of the compound is 0.15% or less, and the content of the impurity is a percentage of the sum of peak areas having a retention time shorter than the retention of a peak identified as the compound in a chromatogram of organic solvent-based size-exclusion chromatography relative to the sum of all peak areas.