The present application relates to compounds of the formula (1), to processes for preparing these compounds, to the use of these compounds in electronic devices and to electronic devices containing at least one of these compounds.

A light-emitting device having a fused cyclic compound includes: a first electrode; a second electrode facing the first electrode; an interlayer between the first electrode and the second electrode and including an emission layer; and a fused cyclic compound of Formula 1:

##STR00001## wherein, in Formula 1, the variables are as defined herein.

A light-emitting device having a fused cyclic compound includes: a first electrode; a second electrode facing the first electrode; an interlayer between the first electrode and the second electrode and including an emission layer; and a fused cyclic compound of Formula 1:

##STR00001## wherein, in Formula 1, the variables are as defined herein.

An aryldiamine compound represented by formula (1) and an organic electroluminescent device including a pair of electrodes and at least one organic layer disposed therebetween wherein the at least one organic layer contains the aryldiamine compound. The aryldiamine compound is excellent in hole transporting properties, hole injection properties, electron blocking properties, stability in thin film form, and heat resistance. The organic electroluminescent device achieves high emission efficiency and power efficiency, drives at a low voltage, and, in particular, has a long life. ##STR00001##

The present invention provides fluorescent polyfluorene polymers or macromers with unique optical properties that are stable. The polymeric fluorophores are useful in various bioassays formats. The inventive polymers are useful in assays relying on fluorescence resonance energy transfer (FRET) mechanisms where two fluorophores are used.

The present invention provides fluorescent polyfluorene polymers or macromers with unique optical properties that are stable. The polymeric fluorophores are useful in various bioassays formats. The inventive polymers are useful in assays relying on fluorescence resonance energy transfer (FRET) mechanisms where two fluorophores are used.

The present invention relates to a method for preparing substituted 4-aminoindane derivatives from 2-(hydroxyalkyl)-anilines by cyclization,

##STR00001##

in which the substituents R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the definitions as specified in the description.

The present invention relates to a method for preparing substituted 4-aminoindane derivatives from 2-(hydroxyalkyl)-anilines by cyclization,

##STR00001##

in which the substituents R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the definitions as specified in the description.

The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present disclosure, an organic electroluminescent device having high luminous efficiency and/or long lifespan properties can be provided compared to conventional organic electroluminescent devices.

An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region. The hole transport region includes a monoamine compound represented by the following Formula 1: ##STR00001##