The present invention provides organic compounds having pseudocapacitive performance and methods of preparing said compounds. The organic compounds can include perylene diamine (PDI) subunits and hexaazatrinaphthylene (HATN) subunits.

A composition comprising a phosphorescent compound of formula (I) and a polymer comprising a repeat unit of formula (II) Ar.sup.1 is an aryl or heteroaryl group. R.sup.2 is a substituent. A is independently in each occurrence N or CR.sup.3 wherein R.sup.3 is H or a substituent. M is a transition metal or metal ion. x is a positive integer of at least 1. y is 0 or a positive integer. L.sup.1 is a mono- or polydentate ligand. R.sup.1 is a substituent. z is 0 or a positive integer. X is O or S. The phosphorescent compound of formula (I) may be mixed with the polymer or may be covalently bound thereto. The composition may be used in the light-emitting layer of an organic light-emitting device.

An organic compound, a donor-acceptor conjugated polymer, a formulation and a thin film, wherein a solution of the donor-acceptor conjugated polymer exhibits a peak optical absorption spectrum red shift of at least 100 nm when the donor-acceptor conjugated polymer solution is cooled from 140° C. to room temperature.

A polymer compound is provided having a constitutional unit represented by the following formula (1): ##STR00001##
wherein: R.sup.1 and R.sup.2 represent an alkyl group, an aryl group, a mono-valent aromatic heterocyclic group, an alkoxy group or an aryloxy group, and Ar.sup.1 represents an arylene group or a di-valent condensed polycyclic aromatic heterocyclic group.

The present invention relates to copolymers containing indenocarbazole derivatives having electron- and hole-transporting properties, in particular for use in the interlayer, emission layer and/or charge-transport layer of electroluminescent devices. The invention furthermore relates to a process for the preparation of the compounds according to the invention and to electronic devices comprising these compounds.

The present invention relates to new semiconducting compounds having at least one optionally substituted azino[1,2,3]thiadiazole moiety. The compounds disclosed herein can exhibit high carrier mobility and/or efficient light absorption/emission characteristics, and can possess certain processing advantages such as solution-processability and/or good stability at ambient conditions.

A polycyclic aromatic compound represented by Formula (1) is provided by the invention:

##STR00001##

wherein A.sup.11 ring, A.sup.21 ring, A.sup.31 ring, B.sup.11 ring, B.sup.21 ring, C.sup.11 ring, and C.sup.31 ring are an aryl or heteroaryl ring which may be substituted, Y.sup.11, Y.sup.21, Y.sup.31 are B or the like, X.sup.11, X.sup.12, X.sup.21, X.sup.22, X.sup.31, X.sup.32 are >O or >N—R, R in the above >N—R is an and which may be substituted or the like, R in the above >N—R or the like may be bonded to A.sup.11 ring, A.sup.21 ring, A.sup.31 ring, B.sup.11 ring, B.sup.21 ring, C.sup.11 ring, and/or C.sup.31 ring by a linking group or a single bond; and at least one hydrogen in the compound represented by Formula (1) may be replaced with deuterium, cyano, or a halogen.

An organic photoelectric conversion device having an anode, a cathode, an active layer disposed between the anode and the cathode, and a hole injection layer disposed between the anode and the active layer, wherein the anode is an electrode containing an electrically conductive nanosubstance and the hole injection layer is a layer showing a of 80% or more in measurement of the residual film rate after a water rinse treatment.

Objects of the present invention is to provide an organic semiconductor element having high mobility and excellent temporal stability under high humidity, and a manufacturing method thereof, to provide a novel compound which is suitable as an organic semiconductor, and to provide an organic semiconductor film having high mobility and excellent temporal stability under high humidity and a manufacturing method thereof, and a composition for forming an organic semiconductor film that can suitably form the organic semiconductor film.

The organic semiconductor element according to the present invention has an organic semiconductor layer containing a compound having a constitutional repeating unit represented by Formula 1.

##STR00001##

Composition for use in an organic light-emitting device, the composition having a fluorescent light-emitting material and a triplet-accepting material subject to the following energetic scheme: 2×T.sub.1A>S.sub.1A>S.sub.1E, or T.sub.1A+T.sub.1E>S.sub.1A>S.sub.1E in which: T1A represents a triplet excited state energy level of the triplet-accepting material; TIE represents a triplet excited state energy level of the light-emitting material; S.sub.1A represents a singlet excited state energy level of the triplet-accepting material; and S.sub.1E represents a singlet excited state energy level of the light-emitting material; and in which light emitted by the composition upon excitation includes delayed fluorescence.