A dye loaded zeolite composite material comprises a plurality of zeolite crystals each having a plurality of straight through uniform channels extending between the proximal face and the distal face and having a channel axis parallel to and a channel width transverse to a longitudinal crystal axis A. Each channel contains a substantially linear arrangement of dye molecules comprising first and second dye molecules having an elongated shape with a longitudinal extension exceeding said channel width and a lateral extension not exceeding said channel width. Each dye molecule consists of a chromophore moiety arranged between a pair of terminal moieties, wherein: the chromophore moieties of the first and second dye molecules are substantially identical, the terminal moieties of the first dye molecules have a lateral extension larger than half of the channel width, the terminal moieties of the second dye molecules have a lateral extension smaller than half of the channel width, the linear arrangement of dye molecules comprises at least one pair of second dye molecules adjacent each other.

The present disclosure relates to a novel compound having excellent hole injection capabilities and transport capabilities, light-emitting capabilities, and the like, and an organic electroluminescent device which includes the compound in one or more organic material layers thereof so as to improve characteristics such as light-emitting efficiency, driving voltage, and a service life.

Described herein are molecules for use in organic light emitting diodes. Example molecules comprise at least one moiety A and at least one moiety D. Values and preferred values of the moieties A and D are described herein. The molecules comprise at least one atom selected from Si, Se, Ge, Sn, P, or As.

An object of the present invention is to provide an organic electroluminescent element containing an organic layer interposed between an anode and a cathode, the organic layer containing at least one light emitting layer, wherein the at least one light emitting layer contains a n-conjugated compound having an electron donor portion and an electron acceptor portion in the molecule; the n-conjugated compound has a direction vector from an atom having a HOMO orbital in the electron donor portion to an electron cloud of the HOMO orbital, and a direction vector from an atom having a LUMO orbital in the electron acceptor portion to an electron cloud of the LUMO orbital, and the two direction vectors form an angle θ in the range of 90 to 180 degrees; and the n-conjugated compound has a plurality of the electron donor portions or a plurality of the electron acceptor portions.

A condensed cyclic compound and an organic light-emitting device including the same are provided. The condensed cyclic compound may have a structure shown below:

##STR00001## wherein details about the possible constituents are provided in detail in the disclosure.

Disclosed are a compound for an organic optoelectronic device, an organic light emitting diode including the same, and a display device including the organic light emitting diode. The compound for an organic optoelectronic device represented by a combination of the following Chemical Formula 1 and Chemical Formula 2 provides an organic light emitting diode having life-span characteristics due to excellent electrochemical and thermal stability, and high luminous efficiency at a low driving voltage.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts on basis of phthalimide and naphthalimide materials, which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (ΔE.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

This invention relates to materials and to films comprising molecular photoswitches. The films exhibit excellent photoswitchable properties in the dry state. This invention is also related to processes of making the materials and the films and to uses of the films. The invention also relates to devices and systems comprising the films of this invention.

Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.

A compound comprising a ligand L.sub.A of Formula I,

##STR00001##

is disclosed. In Formula I, each of Z.sup.1, Z.sup.2, Z.sup.3, Z.sup.4, Z.sup.5, and Z.sup.6 is C or N; K is selected from a direct bond, O, and S; if K is O or S, then Z.sup.6 is C; ligand L.sub.A is coordinated to a metal by the dash lines; M is coordinated to at least one other ligand; L.sup.1 is an organic linker; if M is selected from Ru, Os, or Ir, then K is O or S; if M is selected from Pt, Pd, Cu, Ag, or Au, and K is a direct bond, then M forms at least one bond to oxygen or sulfur; when M is selected from Pt, Pd, Cu, Ag, or Au, and K is O or S, then L.sup.1 is selected from —CR═N—, —CR′R″CR′R″—, —NR′BR′—, —CR′R″O—, —CR′R″S—, —CR′═CR″O—, —CR′═CR″S—, —CR′═CR′NR—, —CR′═CR″CR.sub.2—, —C(═N—)—, and —C(═CR—)—.