Provided is a novel aromatic amine derivative with specified structure. Also provided is an organic electroluminescence device having one or more organic thin-film layers including at least a luminescent layer interposed between a cathode and an anode, in which at least one of the organic thin-film layers contains the above aromatic amine derivative alone or as a component of mixture. As a result, there is provided an organic electroluminescence device that has high emission luminance and high heat resistance, excelling in high-temperature storage ability and has long life, and provided an aromatic amine derivative for realizing the organic electroluminescence device.

Alkylated diaryl amines further substituted by an alkoxy group on one or more aryl carbon atoms exhibit excellent antioxidant activity in lubricant compositions.

Alkylated diaryl amines further substituted by an alkoxy group on one or more aryl carbon atoms exhibit excellent antioxidant activity in lubricant compositions.

The present invention relates to an organic light-emitting diode (OLED) including a novel organic compound used in a light emitting layer thereof. Particularly, the present invention relates to an OLED including a novel pyrene-based organic compound.

The present invention relates to an organic light-emitting diode (OLED) including a novel organic compound used in a light emitting layer thereof. Particularly, the present invention relates to an OLED including a novel pyrene-based organic compound.

The present disclosure provides a compound having a structure of formula (I), where R1 and R2 are defined in the specification. In addition, the present disclosure further provides a preparation method and use of the compound of formula (I), in particular to a perovskite solar cell including the compound of formula (I). This compound as a hole transport material has the advantages in that the use of additives can be avoided, thereby improving the photoelectric conversion efficiency and stability of the cell.

##STR00001##

The present disclosure provides a compound having a structure of formula (I), where R1 and R2 are defined in the specification. In addition, the present disclosure further provides a preparation method and use of the compound of formula (I), in particular to a perovskite solar cell including the compound of formula (I). This compound as a hole transport material has the advantages in that the use of additives can be avoided, thereby improving the photoelectric conversion efficiency and stability of the cell.

##STR00001##

The present invention relates to a compound of the formula (I), to the use of this compound in an electronic device, and to an electronic device comprising one or more compounds of the formula (I). The invention furthermore relates to the preparation of the compound of the formula (I) and to a formulation comprising one or more compounds of the formula (I).

The present invention relates to a compound of the formula (I), to the use of this compound in an electronic device, and to an electronic device comprising one or more compounds of the formula (I). The invention furthermore relates to the preparation of the compound of the formula (I) and to a formulation comprising one or more compounds of the formula (I).

Provided is a photoelectric conversion element including: a first electrode; a hole blocking layer; an electron transport layer; a hole transport layer; and a second electrode, wherein the hole transport layer contains a compound represented by general formula (1) below,

##STR00001##

where in the formula, R.sub.1 represents a methoxy group or an ethoxy group, R.sub.2 represents a hydrogen group or a methyl group, R.sub.3 represents a hydrogen group, a methyl group, or a methoxy group, R.sub.4 represents a methoxy group, and X represents CH.sub.2, CH.sub.2CH.sub.2, O, or C(CH.sub.2).sub.5.