The present invention provides an improved hole transport material, manufacturing method and an electroluminescent device having a central core made of tetramethyldihydrophenazine. A structural formula of the hole transport material is: ##STR00001##
The present invention adjusts the structure of donor units to change a capability of providing electrons thereof, designs a hole transport material of a high mobility and reasonable wires, and the material improves the compounding efficiency.

The present invention provides an improved hole transport material, manufacturing method and an electroluminescent device having a central core made of tetramethyldihydrophenazine. A structural formula of the hole transport material is: ##STR00001##
The present invention adjusts the structure of donor units to change a capability of providing electrons thereof, designs a hole transport material of a high mobility and reasonable wires, and the material improves the compounding efficiency.

Provided are phenazine copolymers and methods of making and using phenazine copolymers. The phenazine copolymers may be made from one or more phenazine precursors and one or more co-monomer precursors, one or more phenazine precursors and one or more cross-linking precursors, or one or more phenazine precursors and both one or more cross-linking precursors and one or more co-monomer precursors. The phenazine copolymers may be used in/on cathodes. The cathodes may be used in a variety of devices, such as, for example, batteries or supercapacitors.

An anodic redox species including a phenazine compound that is substituted with at least one sterically hindered group and an electrochromic device using these chemical compounds are disclosed.

An anodic redox species including a phenazine compound that is substituted with at least one sterically hindered group and an electrochromic device using these chemical compounds are disclosed.

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 π-conjugated compound having an electron donor portion and an electron acceptor portion in the molecule; the π-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 π-conjugated compound has a plurality of the electron donor portions or a plurality of the electron acceptor portions.

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 π-conjugated compound having an electron donor portion and an electron acceptor portion in the molecule; the π-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 π-conjugated compound has a plurality of the electron donor portions or a plurality of the electron acceptor portions.

Disclosed is an organic electroluminescent device, comprising a substrate and light emitting units formed in sequence on the substrate, characterized in that, each of the light emitting units comprises a first electrode layer (1), a light emitting layer (2) and a second electrode layer (3), the light emitting layer comprises a host material and a dye, the host material is made of materials having both electron transport capability and hole transport capability; at least one material in the host material has a CT excited triplet state energy level T.sub.1 greater than its n-π excited triplet state energy level S.sub.1, and T.sub.1-S.sub.1≤0.3 eV; or, at least one material in the host material has a CT excited triplet state energy level T.sub.1 greater than its n-π excited triplet state energy level S.sub.1, and T.sub.1-S.sub.1≥1 eV, with the difference between its n-π excited second triplet state energy level and its CT excited first singlet state energy level being in the range of −0.1 eV to 0.1 eV. The organic electroluminescent device configuration can sufficiently utilize the triplet state energy in the host material and the dye to increase the luminous efficiency and prolong the service life of the device.

Disclosed is an organic electroluminescent device, comprising a substrate and light emitting units formed in sequence on the substrate, characterized in that, each of the light emitting units comprises a first electrode layer (1), a light emitting layer (2) and a second electrode layer (3), the light emitting layer comprises a host material and a dye, the host material is made of materials having both electron transport capability and hole transport capability; at least one material in the host material has a CT excited triplet state energy level T.sub.1 greater than its n-π excited triplet state energy level S.sub.1, and T.sub.1-S.sub.1≤0.3 eV; or, at least one material in the host material has a CT excited triplet state energy level T.sub.1 greater than its n-π excited triplet state energy level S.sub.1, and T.sub.1-S.sub.1≥1 eV, with the difference between its n-π excited second triplet state energy level and its CT excited first singlet state energy level being in the range of −0.1 eV to 0.1 eV. The organic electroluminescent device configuration can sufficiently utilize the triplet state energy in the host material and the dye to increase the luminous efficiency and prolong the service life of the device.

The complex crystal of the present disclosure is a complex crystal having a structure in which supramolecular units each composed of two or more types of molecules are arrayed. Each of the supramolecular units contains a cyanoacrylic acid derivative and a trisubstituted methylamine as the molecules. The complex crystal has, between the supramolecular units, molecular cavities in each of which a guest molecule for which the supramolecular unit is a host is not disposed. The complex crystal of the present disclosure can have a property of incorporating a chemical substance therein and can exhibit a great change in a characteristic when incorporating the chemical substance therein.