The present invention relates to Bisbenzofuran-fused indeno[1,2-b]fluorene derivatives and related compounds as materials for organic electroluminescent devices (OLEDs).

The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present invention, it is possible to produce an organic electroluminescent device having low driving voltage and excellent luminous efficiency such as current efficiency and power efficiency, emitting color of high purity, and having improved lifespan.

The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present invention, it is possible to produce an organic electroluminescent device having low driving voltage and excellent luminous efficiency such as current efficiency and power efficiency, emitting color of high purity, and having improved lifespan.

The present invention provides a compound having the structure: ##STR00001##

The present invention provides a compound having the structure: ##STR00001##

The present invention is a material for forming an organic film, containing: (A) a compound for forming an organic film shown by the following general formula (1A); and (B) an organic solvent, where Wi represents a tetravalent or hexavalent organic group, n1 represents an integer of 1 or 2, n2 represents 2 or 3, each R.sub.1 independently represents any in the following formula (1B), and a hydrogen atom of a benzene ring in the formula (1A) is optionally substituted with a fluorine atom. This provides: a compound having a dioxin structure, which is cured even under film formation conditions in inert gas, and which is capable of forming an organic underlayer film having not only excellent heat resistance and properties of filling and planarizing a pattern formed on a substrate, but also favorable film formability and adhesiveness to a substrate; and an organic film material containing the compound.

##STR00001##

The present invention generally relates to compositions comprising and methods for forming functionalized carbon-based nanostructures.

The present invention generally relates to compositions comprising and methods for forming functionalized carbon-based nanostructures.

The present invention provides a compound having the structure:

##STR00001##

The present invention provides a compound having the structure:

##STR00001##