A method for producing an organometallic nucleophile includes reacting an organohalide and a metal or metal compound with each other by a mechanochemical process in the presence of an ether compound in an amount of 0.5 to 10.0 equivalents relative to 1 equivalent of the organohalide. By utilizing the method, a method for producing an organometallic nucleophile can be performed without using a large-scale apparatus, a reaction method for reactions between an organometallic nucleophile and various organic electrophiles can be performed by an efficient and simplified means, and a simplified method for producing an organometallic nucleophile can be performed with high reactivity.

Transition metal compounds having naphthalene imide moiety having enhanced electron withdrawing property and more metal-ligand charge transfer (MLCT) based excited state are disclosed. The disclosed compounds will improve the photoluminescent quantum yield (PLQY) and produce phosphorescent emission in red to near IR region which has many desired applications.

Transition metal compounds having naphthalene imide moiety having enhanced electron withdrawing property and more metal-ligand charge transfer (MLCT) based excited state are disclosed. The disclosed compounds will improve the photoluminescent quantum yield (PLQY) and produce phosphorescent emission in red to near IR region which has many desired applications.

A compound represented by a formula (1) and having at least one deuterium atom is provided. In the formula (1), n is 1 to 4, L.sub.1 is a divalent group or a group represented by a formula (11) and R.sub.111 to R.sub.119 and R.sub.211 to R.sub.219 are each independently a hydrogen atom or a substituent, where the compound represented by the formula (1) does not include a group represented by —N(R.sub.906) (R.sub.907) and R.sub.906 and R.sub.907 are each independently a hydrogen atom, an alkyl group having 1 to 50 carbon atoms, or the like. In the formula (11), X.sub.13 is an oxygen atom or a sulfur atom, Y.sub.1 to Y.sub.8 are each independently CR.sub.300 or a nitrogen atom, and two of R.sub.300 are a single bond bonded with *a or other L.sub.1 and a single bond bonded with *b or other L.sub.1.

##STR00001##

A compound represented by the following formula (1), provided that at least one of R.sub.1 to R.sub.8 is a deuterium atom; and at least one of Ar.sub.1 and Ar.sub.2 is a substituted or unsubstituted fused aryl group in which only four or more benzene rings are fused.

##STR00001##

A compound represented by the following formula (1), provided that at least one of R.sub.1 to R.sub.8 is a deuterium atom; and at least one of Ar.sub.1 and Ar.sub.2 is a substituted or unsubstituted fused aryl group in which only four or more benzene rings are fused.

##STR00001##

The present invention discloses multi-arm monomolecular white light-emitting materials, preparation method and application thereof. Benzene ring is used as a core, and penta-substituted pyrene and an electron-withdrawing group or an group electron-donating group Ar are used as arms to prepare the multi-arm monomolecular white light-emitting materials; wherein Ar is one of the electron-withdrawing groups such as nitro, cyano, tertiary amine cation, trifluoromethyl, trichloromethyl, sulfonic acid group, formyl, acyl, carboxyl, methoxy, pyridyl, diphenyl sulfone, triazinyl and anthracenedione; or one of the electron-donating groups such as pyrenyl, 9-carbazolyl, 2-thienyl, diphenylamino, tert-butyl diphenylamino, 9-phenoxazinyl, acridinyl, spiro-bifluorenyl, spirofluorenyl acridinyl, alkylamino, dialkylamino, amino and hydroxyl. The present invention simply combines a synthesis method to prepare multi-arm monomolecular white light-emitting materials with novel structure, high fluorescence quantum efficiency, excellent spectrum stability and electroluminescence performance and high color purity, and achieves the preparation of a highly efficient and spectrally stable electroluminescent devices with high color rendering index.

The present invention discloses multi-arm monomolecular white light-emitting materials, preparation method and application thereof. Benzene ring is used as a core, and penta-substituted pyrene and an electron-withdrawing group or an group electron-donating group Ar are used as arms to prepare the multi-arm monomolecular white light-emitting materials; wherein Ar is one of the electron-withdrawing groups such as nitro, cyano, tertiary amine cation, trifluoromethyl, trichloromethyl, sulfonic acid group, formyl, acyl, carboxyl, methoxy, pyridyl, diphenyl sulfone, triazinyl and anthracenedione; or one of the electron-donating groups such as pyrenyl, 9-carbazolyl, 2-thienyl, diphenylamino, tert-butyl diphenylamino, 9-phenoxazinyl, acridinyl, spiro-bifluorenyl, spirofluorenyl acridinyl, alkylamino, dialkylamino, amino and hydroxyl. The present invention simply combines a synthesis method to prepare multi-arm monomolecular white light-emitting materials with novel structure, high fluorescence quantum efficiency, excellent spectrum stability and electroluminescence performance and high color purity, and achieves the preparation of a highly efficient and spectrally stable electroluminescent devices with high color rendering index.

Disclosed herein are embodiments of aryl compounds and polymers thereof that are made using methods that do not require harsh conditions or expensive reagents. The methods disclosed herein utilize precursor compounds that can be polymerized to form polycyclic aromatic hydrocarbons and polymers, such as carbon-based polymers like nanostructures (e.g., graphene or graphene-like nanoribbons).

Disclosed herein are embodiments of aryl compounds and polymers thereof that are made using methods that do not require harsh conditions or expensive reagents. The methods disclosed herein utilize precursor compounds that can be polymerized to form polycyclic aromatic hydrocarbons and polymers, such as carbon-based polymers like nanostructures (e.g., graphene or graphene-like nanoribbons).