A thin film including a combination of a donor compound and an acceptor compound, and a phosphorescent dopant, wherein the donor compound and the acceptor compound form an exciplex having characteristics described in the specification.

An organometallic compound represented by Formula 1:

##STR00001##

wherein, Y.sub.1 to Y.sub.4 are each independently C or N, one of Y.sub.1 to Y.sub.4 is N bonded to Ir in Formula 1, and one of the remaining Y.sub.1 to Y.sub.4 is C bonded to ring CY.sub.2 in Formula 1, Y.sub.9 is O, S, N(R.sub.19), C(R.sub.19a)(R.sub.19b), or Si(R.sub.19a)(R.sub.19b), X.sub.2 is C, ring CY.sub.1 and ring CY.sub.2 are each independently a C.sub.5-C.sub.30 carbocyclic group or a C.sub.1-C.sub.30 heterocyclic group, Z.sub.1 is a group represented by —Si(Q.sub.3)(Q.sub.4)(Q.sub.5) or a group represented by —Ge(Q.sub.3)(Q.sub.4)(Q.sub.5), a1 is an integer from 0 to 2, a2 is an integer from 0 to 20, b1 and b2 are each independently an integer from 1 to 10, and R.sub.1, R.sub.19, R.sub.19a, R.sub.19b, R.sub.2, R.sub.30a, R.sub.30b, R.sub.37, and Z.sub.2 are as described herein.

A method for increasing the light emission produced by the chemiluminescent reaction of 8-amino-5-chloro-7-phenylpyrido[3,4-d]pyridazine-1,4(2H,3H)-dione, a peroxidase enzyme or a conjugate thereof, an enhancer, a co-enhancer and a peroxide oxidizer, wherein the enhancer is an anionic N-alkylphenothiazine and the co-enhancer is selected from a 4-dialkylaminopyridine or an N-azole, and wherein the method comprises the following steps: i. realizing a chemiluminescent substrate by means of mixing together 8-amino-5-chloro-7-phenylpyrido[3,4-d]pyridazine-1,4(2H,3H)-dione, the enhancer, the co-enhancer and the peroxide oxidizer, and ii. adding the peroxidase enzyme or a conjugate thereof to the chemiluminescent substrate.

The present invention relates to compounds of the formulae (1) to (4), which are suitable for use in electronic devices, in particular organic electroluminescent devices, to intermediate compounds for the compounds or formulae (1) to (4) and to electronic devices, which comprise the compounds of formulae (1) to (4).

The present application provides a luminescent material, a method for manufacturing the luminescent material and a luminescent device, the method includes providing a first reactant and a second reactant, reacting the first reactant and the second reactant to generate a mixture containing the luminescent material, separating and purifying the mixture containing the luminescent material to obtain the luminescent material.

Tetradentate platinum and palladium complexes based on biscarbazole and analogues for full color displays and lighting applications.

An OLED including an anode, a cathode, and an organic layer between the anode and the cathode, where the organic layer includes a compound having the formula [L.sub.A].sub.3-nIr[L.sub.B].sub.n is disclosed. In the formula, L.sub.A is

##STR00001##

Provided are an aromatic compound enhancing emission efficiency of blue light emitting region and an organic electroluminescence device including the same. The aromatic compound according to an embodiment of the inventive concept is represented by Formula 1, and more details about the constituents are provided in the disclosure. ##STR00001##

The invention relates to compounds of formula (1) which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices, containing said compounds. X is, identically or differently in each occurrence, CR or N, or two adjacent X stand for a group of the following formula (2), wherein the dashed bonds mark the bonding of said group in formula (1), with the stipulation that the compound of formula (1) contains one or two groups of formula (2); X.sup.1 is, identically or differently in each occurrence, CR or N; Y is, identically or differently in each occurrence, CR or N; Z.sup.1, Z.sup.2, Z.sup.3 are, identically or differently in each occurrence, O, S, N—Ar or CR.sub.2.

The present invention includes novel six member aromatic or heteroaromatic rings fused to aza-DBX as ligands for making dopants for OLED applications.