The present invention relates to multifunctional bisacylphosphine oxides, which are useful as photoinitiators, and to compositions comprising said photoinitiators. The invention also relates to a process for photocuring and to articles of manufacture prepared by said process.

The present invention provides a process for the preparation of mono- and bisacylphosphanes based on formula (I):

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as well as for their corresponding oxides or sulfides. The present invention further relates to photoinitiators obtainable by said process.

The present application relates to a compound which contains an indenocarbazole group, a particular arylamino group and an electron-deficient group bonded to the indenocarbazole group. The compound is suitable for use in electronic devices, in particular in organic electroluminescent devices.

The present specification provides a compound having a spiro structure, and an organic light emitting device including the same.

The present invention relates to the compound represented by the general Formula (I): wherein X is selected from the group consisting of O, S and Se; R.sup.1 and R.sup.2 are independently selected from the group consisting of C.sub.1 to C.sub.12 alkyl, C.sub.6 to C.sub.20 aryl and C.sub.5 to C.sub.20 heteroaryl, wherein the respective C.sub.1 to C.sub.12 alkyl may optionally be substituted with C.sub.6-C.sub.20 aryl; L represents a single bond or is selected from the group consisting of C.sub.6 to C.sub.18 arylene or C.sub.2 to C.sub.20 heteroarylene; wherein the rings B, C and D may each be unsubstituted or substituted and B and C are anellated aromatic 6-membered rings; R.sup.3 and R.sup.4 are independently selected from the group consisting of unsubstituted or substituted C.sub.1 to C.sub.12 alkyl, unsubstituted or substituted C.sub.1 to C.sub.12 fluorinated alkyl, unsubstituted or substituted C.sub.6 to C.sub.20 aryl and unsubstituted or substituted C.sub.5 to C.sub.20 heteroaryl; wherein the substituents, if present in B, C, D, R.sup.3 and R.sup.4, are independently selected from the group consisting of C.sub.1-C.sub.20 linear alkyl, C.sub.3-C.sub.20 branched alkyl, C.sub.3-C.sub.20 cyclic alkyl, C.sub.1-C.sub.20 linear alkoxy, C.sub.3-C.sub.20 branched alkoxy, linear fluorinated C.sub.1-C.sub.12 alkyl, linear fluorinated C.sub.1-C.sub.12 alkoxy, C.sub.3-C.sub.12 branched fluorinated cyclic alkyl, C.sub.3-C.sub.12 fluorinated cyclic alkyl, C.sub.3-C.sub.12 fluorinated cyclic alkoxy, CN, C.sub.6-C.sub.20 aryl, C.sub.2-C.sub.20 heteroaryl, OR, SR, (C═O)R, (C═O)NR2, SiR.sub.3, (S═O)R, (S═O).sub.2R, CR═CR.sub.2, Fluorine, NR.sub.2, NO.sub.2; wherein R is independently selected from C.sub.1-C.sub.20 linear alkyl, C.sub.1-C.sub.20 alkoxy, C.sub.1-C.sub.20 thioalkyl, C.sub.3-C.sub.20 branched alkyl, C.sub.3-C.sub.20 cyclic alkyl, C.sub.3-C.sub.20 branched alkoxy, C.sub.3-C.sub.20 cyclic alkoxy, C.sub.3-C.sub.20 branched thioalkyl, C.sub.3-C.sub.20 cyclic thioalkyl, C.sub.6-C.sub.20 aryl and C.sub.3-C.sub.20 heteroaryl; and R.sup.3 and R.sup.4 may or may not be connected with each other via a single bond, an organic semiconducting layer comprising the same, an organic electronic device comprising the organic semiconducting layer and a display device or a lighting device comprising the same. ##STR00001##

The embodiments provide a fluorescent rare earth complex having strong emission intensity and excellent durability, and also provide a security medium using the complex. The rare earth complex according to the embodiment comprises a rare earth ion, a diphosphine dioxide ligand and a β-diketone ligand wherein two phosphorus atoms contained in the diphosphine dioxide ligand individually have substituents different from each other.

The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.

Embodiments provide a cyclic compound, a light-emitting device including the cyclic compound, and an electronic apparatus including the light-emitting device. The light-emitting device includes a first electrode, a second electrode facing the first electrode, an interlayer between the first electrode and the second electrode and including an emission layer; and at least one cyclic compound. The cyclic compound is represented by Formula 1:

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The description of Formula 1 is provided in the specification.

The present invention relates to an alkenyl pyrimidine compound, a preparation method therefor, and an application thereof. Particularly, the present invention relates to a compound having EGFR inhibitory activity and a pharmaceutically acceptable salt thereof or a pharmaceutically acceptable solvate thereof, a preparation method thereof, a pharmaceutical composition containing the compound, and a use of the compound in the preparation of drugs for preventing and/or treating cancer and other diseases mediated by EGFR kinase.

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The present invention relates to the compounds of Formula I, methods of using these compounds as EGFR inhibitors, and pharmaceutical compositions comprising compounds thereof. The compounds are used for treating, preventing or ameliorating diseases or disorders such as cancer or infections.

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