Provided are a compound of Formula 7 improving the luminous efficiency, stability and life span of an organic electronic element employing the compound, the organic electronic element, and an electronic device thereof.

A light-emitting element with high emission efficiency and high reliability is provided.

The light-emitting element includes a host material and a guest material in a light-emitting layer. The host material has a function of converting triplet excitation energy into light emission and the guest material emits fluorescence. The molecular structure of the guest material is a structure including a luminophore and protecting groups, and five or more protecting groups are included in one molecule of the guest material. The introduction of the protecting groups into the molecule inhibits energy transfer of triplet excitation energy by the Dexter mechanism from the host material to the guest material. As the protecting group, an alkyl group or a branched-chain alkyl group is used.

A novel compound represented by formula (G1) is provided.

##STR00001##

In formula (G1), A represents a substituted or unsubstituted condensed aromatic ring having 10 to 30 carbon atoms or a substituted or unsubstituted condensed heteroaromatic ring having 10 to 30 carbon atoms, and Z.sup.1 to Z.sup.3 each independently have a structure represented by formula (Z-1) or (Z-2). In formula (Z-1), X.sup.1 and X.sup.2 each independently represent any one of an alkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, a cycloalkyl group having a bridge structure and having 7 to 10 carbon atoms, and a trialkylsilyl group having 3 to 12 carbon atoms. In addition, Ar.sup.1 to Ar.sup.4 each independently represent a substituted or unsubstituted aromatic hydrocarbon group having 6 to 13 carbon atoms, and at least one of Ar.sup.1 to Ar.sup.4 has the same substituent as X.sup.1 or X.sup.2.

A charge transporting, liquid crystal photoalignment material comprising a charge transporting moiety connected through covalent chemical bonds to a surface derivatising moiety, and a photoalignment moiety connected through covalent chemical bonds to a surface derivatising moiety.

A light-emitting element with high emission efficiency and high reliability is provided. The light-emitting element includes a host material and a guest material in a light-emitting layer. The host material has a function of converting triplet excitation energy into light emission and the guest material emits fluorescence. The molecular structure of the guest material is a structure including a luminophore and protecting groups, and five or more protecting groups are included in one molecule of the guest material. The introduction of the protecting groups into the molecule inhibits energy transfer of triplet excitation energy by the Dexter mechanism from the host material to the guest material. As the protecting group, an alkyl group or a branched-chain alkyl group is used.

The present invention includes novel compounds containing deuterated or partially deuterated xanthene and thioxanthene structures. These compounds may be useful as host materials with high triplet energies for phosphorescent electroluminescent devices.

The present invention relates to a charge transporting semi-conducting material. The charge transporting semi-conducting material may include optionally at least one electrical dopant, and a branched or cross-linked charge transporting polymer that includes 1,2,3-triazole cross-linking units of at least one of the general formulae Ia and/or Ib herein. The charge transporting polymer can include ethylene building units substituted with at least one pending side group including a conjugated system of delocalized electrons. Also provided herein are processes for obtaining the charge transporting semi-conducting material.

The present invention relates to a method for fabricating columnar or lamellar structures of organic molecules aligned into a large-area single domain, and more particularly, to a method for fabricating columnar or lamellar structures of organic molecules aligned into a large-area single domain, in which organic molecules having a random alignment due to their poly-domain structure are spatially confined between a bottom substrate and a top substrate, and then heated above the isotropic transition temperature of the organic molecules, thereby allowing the organic molecules to have a new alignment different from the initial alignment. Columnar or lamellar structures of organic molecules aligned into a large-area single domain, which are fabricated by the fabrication of the present invention, are large-area single domains having a perfectly columnar shape. Also, because the organic molecules are spatially confined between flat substrates regardless of the properties of the substrates and are subjected to a heat-treatment process, the fabrication method according to the present invention enables nanostructures to be formed in a rapid and efficient manner compared to alignments methods employing high temperatures or solvents.

According to the present disclosure, a method of forming a pattern may include forming guide patterns on a substrate, wherein a trench is provided between the guide patterns, forming an organic-inorganic pattern including organic supramolecular structures in the trench, and annealing the organic-inorganic pattern, thereby aligning the dendrimer structures in parallel with one direction.

The present invention includes novel compounds containing deuterated or partially deuterated xanthene and thioxanthene structures. These compounds may be useful as host materials with high triplet energies for phosphorescent electroluminescent devices