Abstract: Described herein are a novel concept of thermally stimulated delayed phosphorescence (TSDP) to harvest light emission from the higher energy triplet excited state via the up-conversion from the lowest-energy triplet excited state by efficient spin-allowed reverse internal conversion as well as the development of TSDP emitters, as exemplified by a novel class of gold(III) compounds with TSDP properties and methods of making and using said compounds. The gold(III) compound includes a triazine-containing cyclometalating tridentate ligand and one auxiliary ligand, both coordinated to a gold(III) metal center. The gold(III) compounds disclosed herein can be used as light-emitting material for fabrication of OLEDs.

Abstract: A series of thermally stable and highly luminescent cyclometalated tetradentate ligand-containing gold(III) compounds was designed and synthesized. The cyclometalated tetradentate ligand-containing gold(III) compounds can be used as light-emitting material for fabrication of light-emitting devices. The cyclometalated tetradentate ligand-containing gold(III) compounds can be deposited as a layer or a component of a layer using a solution-processing technique or a vacuum deposition process. The cyclometalated tetradentate ligand-containing gold(III) compounds are robust and can provide electroluminescence with high efficiency and brightness. More importantly, the vacuum-deposited OLEDs demonstrate long operational stabilities with half-lifetime of over 29,700 hours at 100 cd m?2.

Abstract: A highly rigid tetradentate ligand is combined with a gold(III) ion as a thermally stable tetradentate gold(III) complex. The tetradentate gold(III) complex is a tetradentate gold(III) compound that can be used as a light-emitting material which can be used for fabricated of light-emitting devices such as an organic light-emitting diode (OLED). The tetradentate gold(III) compound can be deposited as a layer or a component of a layer using a solution-process or a vacuum deposition process. The luminescent tetradentate gold(III) compounds are robust and can provide electroluminescence (EL) with a high efficiency and brightness.

Abstract: A germole-fused diarylethene-based compound is presented that includes a germanium-containing five-membered ring structure with an ethene bridge fused to photoactive bis-aryl rings. The germole-fused diarylethene-based compound isomerizes between a ring-open and a ring-closed form upon irradiation and to allow optical storage or photoswitching devices. A method to form the germole-fused diarylethene-based compound is through a rhodium catalyzed coupling between a 1-germyl-aryl-2-boronic ester, 1-germyl-heteroaryl-2-boronic ester, or 1-germyl-alkenyl-2-boronic ester with the 1,2-diarylethyne. The germole-fused diarylethene-based compounds display tunable photophysical properties of the photogenerated closed form, with excellent thermal irreversibility and a robust fatigue resistance.

Abstract: A series of thermally stable and highly luminescent cyclometalated tetradentate ligand-containing gold(III) compounds was designed and synthesized. The cyclometalated tetradentate ligand-containing gold(III) compounds can be used as light-emitting material for fabrication of light-emitting devices. The cyclometalated tetradentate ligand-containing gold(III) compounds can be deposited as a layer or a component of a layer using a solution-processing technique or a vacuum deposition process. The cyclometalated tetradentate ligand-containing gold(III) compounds are robust and can provide electroluminescence with high efficiency and brightness. More importantly, the vacuum-deposited OLEDs demonstrate long operational stabilities with half-lifetime of over 29,700 hours at 100 cd m?2.

Abstract: A series of thermally stable and highly luminescent cyclometalated tetradentate ligand-containing gold(III) compounds was designed and synthesized. The cyclometalated tetradentate ligand-containing gold(III) compounds can be used as light-emitting material for fabrication of light-emitting devices. The cyclometalated tetradentate ligand-containing gold(III) compounds can be deposited as a layer or a component of a layer using a solution-processing technique or a vacuum deposition process. The cyclometalated tetradentate ligand-containing gold(III) compounds are robust and can provide electroluminescence with high efficiency and brightness. More importantly, the vacuum-deposited OLEDs demonstrate long operational stabilities with half-lifetime of over 29,700 hours at 100 cd m?2.

Abstract: A novel class of gold(III) compounds containing cyclometalated tridentate ligand and one aryl auxiliary ligand, both coordinated to a gold(III) metal center. (a) X is nitrogen or carbon; (b) Y and Z are independently nitrogen or carbon; (c) A is cyclic structure (derivative) of pyridine, quinoline, isoquinoline or phenyl group; (d) B and C are independently cyclic structures (derivatives) of pyridine, quinoline, isoquinoline or phenyl groups; (e) B and C can be identical or non-identical, with the proviso that both B and C are not 4-tert-butylbenzene; (f) R? is a substituted carbon, nitrogen, oxygen or sulfur donor ligand attached to the gold atom; (g) n is zero, a positive integer or a negative integer. wherein R? is selected from, but not limited to, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic aryl and substituted heterocyclic aryl, alkoxy, aryloxy, amide, thiolate, sulfonate, phosphide, fluoride, chloride, bromide, iodide, cyanate, thiocyanate or cyanide.

Abstract: Described herein are gold (III) compounds according to formula (I) for use as emitters in organic light-emitting devices (OLEDs) and methods of making and using said compounds. The gold (III) compound includes a group 15 element containing tridentate ligand and one aryl auxiliary ligand that are both coordinated to the gold (III) metal center to form a series of thermally stable and highly luminescent gold (III) complexes. The gold (III) compounds disclosed herein can be used as light-emitting material for fabrication of OLEDs. The gold (III) compounds can be deposited as a layer or a component of a layer using a solution processing technique or a vacuum deposition process. The gold (III) compounds are robust and can provide electroluminescence with high efficiency and brightness.

Abstract: A highly rigid tetradentate ligand is combined with a gold(III) ion as a thermally stable tetradentate gold(III) complex. The tetradentate gold(III) complex is a tetradentate gold(III) compound that can be used as a light-emitting material which can be used for fabricated of light-emitting devices such as an organic light-emitting diode (OLED). The tetradentate gold(III) compound can be deposited as a layer or a component of a layer using a solution-process or a vacuum deposition process. The luminescent tetradentate gold(III) compounds are robust and can provide electroluminescence (EL) with a high efficiency and brightness.

Abstract: A highly rigid tetradentate ligand is combined with a gold(III) ion as a thermally stable tetradentate gold(III) complex. The tetradentate gold(III) complex is a tetradentate gold(III) compound that can be used as a light-emitting material which can be used for fabricated of light-emitting devices such as an organic light-emitting diode (OLED). The tetradentate gold(III) compound can be deposited as a layer or a component of a layer using a solution-process or a vacuum deposition process. The luminescent tetradentate gold(III) compounds are robust and can provide electroluminescence (EL) with a high efficiency and brightness.

Abstract: A novel class of gold (III) compounds with thermally stimulated delayed phosphorescence (TSDP) properties, methods of making and use thereof are disclosed. The gold (III) compound includes a triazine-containing cyclometalating tridentate ligand and one auxiliary ligand, both coordinated to a gold (III) metal center. The gold (III) compounds can be used as light-emitting material for fabrication of OLEDs. A novel concept of TSDP to harvest light emission from the higher energy triplet excited state via the up-conversion from the lowest-energy triplet excited state by efficient spin-allowed reverse internal conversion is also disclosed.

Abstract: A supramolecular polymer with living characteristics is provided based on small molecules or metal complexes of a planar or linear geometry and a polymer. The small molecules are solvophobic and can associate or assemble with each other through non-covalent interactions such as but not limited to metal-metal, ?-?, hydrogen-bonding, and/or solvophobic-solvophobic interactions, in the modulation of the polymer. The polymer has affinity to the medium (e.g., solvent) and still interacts with the small molecules via non-covalent interactions such as electrostatic attractions to stabilize the associated/assembled small molecules. Varying the composition and/or length of the polymer can modulate the dimensions of the supramolecular polymer and the nanostructures therefrom. The two- or multi-component supramolecular polymer has active ends to support further supramolecular polymerization upon addition of small molecules of a planar or linear geometry.

Abstract: Described herein are gold (III) compounds according to formula (I) for use as emitters in organic light-emitting devices (OLEDs) and methods of making and using said compounds. The gold (III) compound includes a group 15 element containing tridentate ligand and one aryl auxiliary ligand that are both coordinated to the gold (III) metal center to form a series of thermally stable and highly luminescent gold (III) complexes. The gold (III) compounds disclosed herein can be used as light-emitting material for fabrication of OLEDs. The gold (III) compounds can be deposited as a layer or a component of a layer using a solution processing technique or a vacuum deposition process. The gold (III) compounds are robust and can provide electroluminescence with high efficiency and brightness.

Abstract: A series of thermally stable and highly luminescent cyclometalated tetradentate ligand-containing gold(III) compounds was designed and synthesized. The cyclometalated tetradentate ligand-containing gold(III) compounds can be used as light-emitting material for fabrication of light-emitting devices. The cyclometalated tetradentate ligand-containing gold(III) compounds can be deposited as a layer or a component of a layer using a solution-processing technique or a vacuum deposition process. The cyclometalated tetradentate ligand-containing gold(III) compounds are robust and can provide electroluminescence with high efficiency and brightness. More importantly, the vacuum-deposited OLEDs demonstrate long operational stabilities with half-lifetime of over 29,700 hours at 100 cd m?2.

Abstract: Described herein are transition metal complexes containing nickel(II), as the central metal atom, and tridentate and tetradentate ligands. The transition metal complexes also include an ancillary ligand with strong ?-donating properties. The ancillary ligand enhances the luminescence by increasing the chances of populating the emissive state. The transition metal complexes are emissive at room temperature and/or low temperature in various media, rendering them useful as light-emitting materials for OLEDs.

Abstract: Described herein are transition metal complexes containing nickel(II), as the central metal atom, and tridentate and tetradentate ligands. The transition metal complexes also include an ancillary ligand with strong ?-donating properties. The ancillary ligand enhances the luminescence by increasing the chances of populating the emissive state. The transition metal complexes are emissive at room temperature and/or low temperature in various media, rendering them useful as light-emitting materials for OLEDs.

Abstract: Disclosed is a class of dendrimers containing cyclometalated tridentate platinum(II) compounds with one monoanionic auxiliary ligand, both coordinated to a platinum (II) metal center and having the chemical structure shown in generic formula (I), wherein at least one of R1, R2 and R3 being a dendrimeric moiety of general formula (II), each being optionally substituted.

Abstract: A novel class of gold(III) compounds containing cyclometalated tridentate ligand and one aryl auxiliary ligand, both coordinated to a gold(III) metal center. (a) X is nitrogen or carbon; (b) Y and Z are independently nitrogen or carbon; (c) A is cyclic structure (derivative) of pyridine, quinoline, isoquinoline or phenyl group; (d) B and C are independently cyclic structures (derivatives) of pyridine, quinoline, isoquinoline or phenyl groups; (e) B and C can be identical or non-identical, with the proviso that both B and C are not 4-tert-butylbenzene; (f) R? is a substituted carbon, nitrogen, oxygen or sulfur donor ligand attached to the gold atom; (g) n is zero, a positive integer or a negative integer. wherein R? is selected from, but not limited to, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic aryl and substituted heterocyclic aryl, alkoxy, aryloxy, amide, thiolate, sulfonate, phosphide, fluoride, chloride, bromide, iodide, cyanate, thiocyanate or cyanide.

Abstract: A solution-processable material for the fabrication of optical reflector and organic memory device is disclosed having a donor-acceptor system consisting of a boron(III) moiety as the electron acceptor unit. More specifically, described herein is the utilization of boron(III)-containing donor-acceptor compounds having a chemical structure represented by the following general formula (I) as active material for the fabrication of optical reflectors and organic memory devices.

Abstract: A supramolecular polymer with living characteristics is provided based on small molecules or metal complexes of a planar or linear geometry and a polymer. The small molecules are solvophobic and can associate or assemble with each other through non-covalent interactions such as but not limited to metal-metal, ?-?, hydrogen-bonding, and/or solvophobic-solvophobic interactions, in the modulation of the polymer. The polymer has affinity to the medium (e.g., solvent) and still interacts with the small molecules via non-covalent interactions such as electrostatic attractions to stabilize the associated/assembled small molecules. Varying the composition and/or length of the polymer can modulate the dimensions of the supramolecular polymer and the nanostructures therefrom. The two- or multi-component supramolecular polymer has active ends to support further supramolecular polymerization upon addition of small molecules of a planar or linear geometry.