This invention relates to the direct grafting of a calixarene mostly onto the surface of a material, as well as to a grafting process, and certain calixarene intermediates useful for carrying the grafting process.

The present invention relates to phosphorescent organic light-emitting diodes (OLEDs) including a hole-transporting or a hole-transporting and an electron-blocking layer including an N,N,N,N-tetraaryl-phenylene-3,5-diamine or an N,N,N,N-tetraaryl-1,1-biphenyl-3,3-diamine matrix compound and to new N,N,N,N-tetraarylsubstituted m-arylene diamine compounds useful as hole-transporting and electron-blocking layer matrices in phosphorescent OLEDs.

The present invention relates to phosphorescent organic light-emitting diodes (OLEDs) including a hole-transporting or a hole-transporting and an electron-blocking layer including an N,N,N,N-tetraaryl-phenylene-3,5-diamine or an N,N,N,N-tetraaryl-1,1-biphenyl-3,3-diamine matrix compound and to new N,N,N,N-tetraarylsubstituted m-arylene diamine compounds useful as hole-transporting and electron-blocking layer matrices in phosphorescent OLEDs.

A calixarene directly grafted onto the surface of a material, a related grafting process, and certain calixarene intermediates useful for carrying out the grafting process.

A calixarene directly grafted onto the surface of a material, a related grafting process, and certain calixarene intermediates useful for carrying out the grafting process.

The present invention relates to phosphorescent organic light-emitting diodes (OLEDs) comprising a hole-transporting or a hole-transporting and an electron-blocking layer comprising an N,N,N,N-tetraaryl-phenylene-3,5-diamine or an N,N,N,N-tetraaryl-1,1-biphenyl-3,3-diamine matrix compound and to new N,N,N,N-tetraarylsubstituted m-arylene diamine compounds useful as hole-transporting and electron-blocking layer matrices in phosphorescent OLEDs.

The present invention relates to phosphorescent organic light-emitting diodes (OLEDs) comprising a hole-transporting or a hole-transporting and an electron-blocking layer comprising an N,N,N,N-tetraaryl-phenylene-3,5-diamine or an N,N,N,N-tetraaryl-1,1-biphenyl-3,3-diamine matrix compound and to new N,N,N,N-tetraarylsubstituted m-arylene diamine compounds useful as hole-transporting and electron-blocking layer matrices in phosphorescent OLEDs.

The disclosure provides for coating compositions comprising macrocycles and salts in aqueous buffer and the use of the coating composition to prevent absorption of small molecules into polymeric surfaces.

Polycyclic aromatic hydrocarbon derivatives represented by the following general formula: (I) wherein R independently represents an aromatic group and/or an aliphatic group; Q is one of a cyclic aliphatic hydrocarbon, a cyclic aromatic hydrocarbon, a polycyclic hydrocarbon, a polycyclic aromatic hydrocarbon, and/or a fused polycyclic aromatic hydrocarbon; wherein the substituents independently comprise one or more of a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a bromine atom, a carbon atom, an oxygen atom (e.g. an alkylated oxygen atom), a nitrogen atom (e.g. an alkylated nitrogen atom), a cyano group, a nitro group, an alkyl group and/or an aryl group; p is an integer of 1 to 2; q is an integer of 1 to 4; Y.sup.1 and Y.sup.2 independently represent one or more of a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a bromine atom, a carbon atom, an oxygen atom (e.g. an alkylated oxygen atom), a nitrogen atom (e.g. an alkylated nitrogen atom), a cyano group, a nitro group, an alkyl group and/or an aryl group; and x is an integer of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. ##STR00001##

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.