The present invention is directed to HIF inhibitors and methods of preventing cell proliferation, reducing inflammation, and treating an angiogenic disease or disorders.

The present invention is directed to HIF inhibitors and methods of preventing cell proliferation, reducing inflammation, and treating an angiogenic disease or disorders.

A thermally activated delayed fluorescent (TADF) compound, a method for preparing thereof, and an organic electroluminescent diode device are provided. The thermally activated delayed fluorescent compound includes a chemical structure of formula I:

##STR00001##

and R is an electron donating group. A trifluoromethyl group is used as a strong electron acceptor group, and an electron donor group is modified by combining different functional groups. An influence of the strength of the electron donor on material properties is researched to design a blue-light thermal activation delayed fluorescent compounds with significant TADF properties. The thermally activated delayed fluorescent compounds have a high reaction rate constant of reverse intersystem enthalpy constant (k.sub.RISC) and highly efficient blue-light TADF materials. When the thermally activated delayed fluorescent compounds are used as a light-emitting material for an organic light-emitting display device, and the organic light-emitting display device is improved to have high luminous efficiency.

A thermally activated delayed fluorescent (TADF) compound, a method for preparing thereof, and an organic electroluminescent diode device are provided. The thermally activated delayed fluorescent compound includes a chemical structure of formula I:

##STR00001##

and R is an electron donating group. A trifluoromethyl group is used as a strong electron acceptor group, and an electron donor group is modified by combining different functional groups. An influence of the strength of the electron donor on material properties is researched to design a blue-light thermal activation delayed fluorescent compounds with significant TADF properties. The thermally activated delayed fluorescent compounds have a high reaction rate constant of reverse intersystem enthalpy constant (k.sub.RISC) and highly efficient blue-light TADF materials. When the thermally activated delayed fluorescent compounds are used as a light-emitting material for an organic light-emitting display device, and the organic light-emitting display device is improved to have high luminous efficiency.

The present invention discloses a 9,10-dihydro-acridine derivative having a structure of Formula (I). The compound has a suitable HOMO energy level that matches that of an anode and light emitting layer when used as a material of a hole transport layer, thus reducing the potential barrier needed to overcome when holes are transported to the light emitting layer, and reducing the operating voltage of the device. Moreover, the 9,10-dihydro-acridine derivative has high triplet energy level and LUMO level, to avoid the returning of energy from the light emitting layer, retain the electrons in the light emitting layer, increase the probability of recombination of electrons and holes in the light emitting layer, and enhance the luminescence efficiency of the device. The compound of Formula (I) has high glass transition temperature, good film forming performance, and high thermal stability. The present invention further discloses an organic light-emitting device having at least one functional layer containing the 9,10-dihydro-acridine derivative. When the compound is used as a material of the hole transport layer, a light-emitting device of high luminescence efficiency and low driving voltage is obtained.

The present invention discloses a 9,10-dihydro-acridine derivative having a structure of Formula (I). The compound has a suitable HOMO energy level that matches that of an anode and light emitting layer when used as a material of a hole transport layer, thus reducing the potential barrier needed to overcome when holes are transported to the light emitting layer, and reducing the operating voltage of the device. Moreover, the 9,10-dihydro-acridine derivative has high triplet energy level and LUMO level, to avoid the returning of energy from the light emitting layer, retain the electrons in the light emitting layer, increase the probability of recombination of electrons and holes in the light emitting layer, and enhance the luminescence efficiency of the device. The compound of Formula (I) has high glass transition temperature, good film forming performance, and high thermal stability. The present invention further discloses an organic light-emitting device having at least one functional layer containing the 9,10-dihydro-acridine derivative. When the compound is used as a material of the hole transport layer, a light-emitting device of high luminescence efficiency and low driving voltage is obtained.

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

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

A compound represented by the general formula (11) is useful as a light-emitting material. R.sup.1, R.sup.2, R.sup.4 and R.sup.5 represent a group represented by the general formula (2), R.sup.11 to R.sup.20 represent a hydrogen atom or a substituent, and L.sup.12 represents a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group.

##STR00001##

The sulfonium salt does not contain a toxic metal and exhibits higher cationic polymerization performance and crosslinking performance than a tetrakis(pentafluorophenyl)borate salt. The heat- or photo-acid generator contains the sulfonium salt. The sulfonium salt is formed of a sulfonium cation selected from a group represented by general formulas (1), (9), (10) and (11) described below and a gallate anion represented by formula (a). The heat- or photo-acid generator contains the sulfonium salt. The heat- or energy ray-curable composition contains the acid generator and a cationically polymerizable compound. A cured product can be obtained by curing the same.

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