A compound represented by formula (1): ##STR00001##
wherein Ar.sup.1 and Ar.sup.2 each represents a group represented by formula (3); ##STR00002##
and R.sup.1 represents a naphthylphenyl group, a biphenylyl group, a terphenylyl group, a biphenylenyl group, a naphthyl group, or a phenylnaphthyl group; R.sup.2 represents a hydrogen atom; R.sup.5 and R.sup.6 are as defined in the description is provided. An electroluminescence device which contains the compound of formula (1) is also provided.

The present invention relates to a compound of formula (I), wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently hydrogen or R.sup.a, with proviso that a pair of two substituents selected from R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, and R.sup.3 and R.sup.4 is linked to one another and forms a group of formula (II); a material for an organic electroluminescence device comprising at least one compound of formula (I); an organic electroluminescence device which comprises an organic thin film layer be-tween an anode and a cathode, wherein the organic thin film layer comprises one or more layers and comprises a light emitting layer, and at least one layer of the organic thin film layer comprises at least one compound of formula (I); and an electronic equipment comprising the inventive organic electroluminescence device. ##STR00001##

Disclosed herein are compounds capable of producing organic electroluminescence (EL) devices having excellent properties, organic EL devices comprising the compounds, and electronic devices comprising the organic EL devices. The compounds of this disclosure are represented by formula (1) below, where A, B, C, and R.sub.1 to R.sub.11 are defined herein. ##STR00001##

An object of the present invention is to provide a kit and a method capable of achieving high-precision measurement of a measurement target substance in a biological sample in a wide concentration range from a low concentration to a high concentration by sufficiently avoiding the influence of antibodies such as anti-serum albumin antibody present in blood. According to the present invention, there is provided a kit for measuring a measurement target substance in a biological sample, the kit including: a labeled particle having a first binding substance capable of binding to the measurement target substance and having a first blocking agent; and a substrate having a second binding substance capable of binding to any one of the measurement target substance or the first binding substance and having a second blocking agent, in which the labeled particle is a luminescent labeled particle containing at least one kind of compound represented by Formula (1) and a particle, and the first blocking agent and the second blocking agent are different from each other. ##STR00001## Each symbol in Formula (1) has the meaning described in the present specification.

Provided is a compound of Formula 1: ##STR00001##
and an organic light emitting device including the same.

A green light thermally activated delayed fluorescent material and a synthesizing method thereof, and an electroluminescent device are described. The green light thermally activated delayed fluorescent material is a target compound reacted and synthesized by an electron donor and an electron acceptor. The target compound is a D-A molecular structure. The electron acceptor has a fluorine-containing group and a bromine-containing group. The electron acceptor is a planar electron acceptor with an ultra-low triplet state energy level, and a triplet state energy level of the target compound ranges from 1.0 to 2.0 eV. The synthesized green light thermally activated delayed fluorescent material improves a luminous efficiency and realizes a preparation of a high efficiency organic electroluminescent device.

Disclosed is a rare earth complex including: one or a plurality of rare earth ions; and a ligand forming a coordinate bond with the rare earth ions. At least a part of the rare earth ions are at least one kind selected from the group consisting of lutetium(III) ions, yttrium(III) ions, and gadolinium(III) ions. The ligand includes a residue obtained by removing one or more hydrogen atoms from a fluorescent condensed polycyclic aromatic compound.

Provided is a moisture curable polyurethane composition that is a moisture curable polyurethane having an isocyanate group on one end of a molecule thereof. The moisture curable polyurethane composition contains a moisture curable polyurethane (A) and an organic solvent (B). The moisture curable polyurethane (A) is obtainable by reacting a polyisocyanate compound having at least two isocyanate groups in a molecule thereof (A1) with a low-molecular weight polyol compound having at least two hydroxyl groups in a molecule thereof and having a number average molecular weight of 50-300 (A2). Also provided is a laminate including an optical substrate and a polyurethane resin layer comprising the moisture curable polyurethane composition.

Provided is an organic light emitting device comprising a light emitting layer comprising a compound of Chemical Formula 1 and a compound of Chemical Formula 2:

##STR00001## wherein: Ar.sub.1, Ar.sub.2, Ar.sub.4 and Ar.sub.5 are each independently a substituted or unsubstituted C.sub.6-60 aryl or C.sub.2-60 heteroaryl containing N, O or S; Ar.sub.3 is hydrogen, or a substituted or unsubstituted C.sub.6-60 aryl or C.sub.2-60 heteroaryl containing N, O or S; L.sub.1 to L.sub.3 are each independently a single bond or a substituted or unsubstituted C.sub.6-60 arylene; L.sub.4 to L.sub.6 are each independently a single bond or a substituted or unsubstituted C.sub.6-60 arylene or C.sub.2-60 heteroarylene containing N, O or S; L.sub.7 is a substituted or unsubstituted C.sub.6-60 arylene; R.sub.1 is hydrogen, deuterium, or a substituted or unsubstituted C.sub.6-60 aryl or C.sub.2-60 heteroaryl containing one or of N, O and S; a is 0 to 7.

Provided is an organic light-emitting device including a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode and comprising an emission layer, wherein the organic layer includes at least one condensed cyclic compound represented by Formula 1.