The present application provides a dioxin derivative, a preparation method thereof, an electron transport layer, an OLED device and a display panel. The dioxin derivative has a formula of

##STR00001##

where X is O, S or NR; L represents a direct bond, or L is a substituted or unsubstituted C.sub.6-C.sub.60 arylene, or L is a C.sub.2-C.sub.60 heteroaryl including a first heteroatom; A has a formula of

##STR00002##

Ar1 and Ar2 independently are substituted or unsubstituted aryl, phenyl, biphenyl, or hererocyclyl comprising a second heteroatom, B is O, S or Se, X1, X2 and X3 independently are C or N, and at least one of X1, X2 or X3 is N, R4, R5 and R6 independently are C.sub.5-C.sub.30 aromatic or heteroaromatic group ring.

The present disclosure provides a nitrogen-containing compound, an electronic element and an electronic device, which belongs to the technical field of organic materials. The nitrogen-containing compound has a structure of Chemical Formula 1, wherein R.sub.1 and R.sub.2 are each independently selected from hydrogen or a group represented by Chemical Formula 1-1, and one and only one of R.sub.1 and R.sub.2 has the group of Chemical Formula 1-1; when R.sub.1 or R.sub.2 is selected from hydrogen, said R.sub.1 and R.sub.2 may be replaced by R.sub.4. The nitrogen-containing compound can improve the performance of electronic elements.

The present invention relates to photoinitiator compounds of the formula (1) wherein X is O, S or a direct bond; Y is O, S or CR.sub.9R.sub.10; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 independently of each other are hydrogen, halogen, C.sub.1-C.sub.18alkyl, C.sub.5-C.sub.10cycloalkyl, C.sub.2-C.sub.18alkenyl, phenyl, C.sub.1-C.sub.4alkoxy, C.sub.5-C.sub.7cycloalkoxy, phenoxy, C.sub.1-C.sub.4-alkylthio, C.sub.5-C.sub.7cycloalkylthio, phenylthio, di(C.sub.1-C.sub.4alkyl)amino, di(C.sub.5-C.sub.7cycloalkyl)amino, N-morpholinyl, N-piperidinyl or a group of formula (2) provided that one or more than one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 or R.sub.8 is a group of formula (2); R.sub.9, R.sub.10 independently of each other are hydrogen, C.sub.1-C.sub.18alkyl, C.sub.2-C.sub.12alkenyl, C.sub.5-C.sub.10cycloalkyl, phenyl-C.sub.1-C.sub.4alkyl, phenyl or together with the C atom to which they are attached form a 5-membered, 6-membered or 7-membered ring; and R.sub.11 is hydrogen, C.sub.1-C.sub.18alkyl, C.sub.5-C.sub.10cycloalkyl, C.sub.2-C.sub.12alkenyl, phenyl-C.sub.1-C.sub.4alkyl or phenyl. ##STR00001##

The present invention relates to photoinitiator compounds of the formula (1) wherein X is O, S or a direct bond; Y is O, S or CR.sub.9R.sub.10; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 independently of each other are hydrogen, halogen, C.sub.1-C.sub.18alkyl, C.sub.5-C.sub.10cycloalkyl, C.sub.2-C.sub.18alkenyl, phenyl, C.sub.1-C.sub.4alkoxy, C.sub.5-C.sub.7cycloalkoxy, phenoxy, C.sub.1-C.sub.4-alkylthio, C.sub.5-C.sub.7cycloalkylthio, phenylthio, di(C.sub.1-C.sub.4alkyl)amino, di(C.sub.5-C.sub.7cycloalkyl)amino, N-morpholinyl, N-piperidinyl or a group of formula (2) provided that one or more than one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 or R.sub.8 is a group of formula (2); R.sub.9, R.sub.10 independently of each other are hydrogen, C.sub.1-C.sub.18alkyl, C.sub.2-C.sub.12alkenyl, C.sub.5-C.sub.10cycloalkyl, phenyl-C.sub.1-C.sub.4alkyl, phenyl or together with the C atom to which they are attached form a 5-membered, 6-membered or 7-membered ring; and R.sub.11 is hydrogen, C.sub.1-C.sub.18alkyl, C.sub.5-C.sub.10cycloalkyl, C.sub.2-C.sub.12alkenyl, phenyl-C.sub.1-C.sub.4alkyl or phenyl. ##STR00001##

A tricyclic compound having the structure represented by general formula (I), a pharmaceutical composition thereof, a preparation method therefor and the use thereof in the prevention and treatment of a variety of diseases caused by toxic aldehydes.

##STR00001##

A tricyclic compound having the structure represented by general formula (I), a pharmaceutical composition thereof, a preparation method therefor and the use thereof in the prevention and treatment of a variety of diseases caused by toxic aldehydes.

##STR00001##

Tagging agents, including fluorescent monomers, which may be polymerized. Anti-scalant polymer compositions that include a copolymer of a tagging agent and an anti-scalant monomer. Methods for synthesizing tagging agents, anti-scalant polymer compositions, and detecting an anti-scalant polymer composition.

The present invention relates to photoinitiator compounds of the formula (1) wherein X is O, S or a direct bond; Y is O, S or CR.sub.9R.sub.10; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 independently of each other are hydrogen, halogen, C.sub.1-C.sub.18alkyl, C.sub.5-C.sub.10cycloalkyl, C.sub.2-C.sub.18alkenyl, phenyl, C.sub.1-C.sub.4alkoxy, C.sub.5-C.sub.7cycloalkoxy, phenoxy, C.sub.1-C.sub.4-alkylthio, C.sub.5-C.sub.7cycloalkylthio, phenylthio, di(C.sub.1-C.sub.4alkyl)amino, di(C.sub.5-C.sub.7cycloalkyl)amino, N-morpholinyl, N-piperidinyl or a group of formula (2) provided that one or more than one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 or R.sub.8 is a group of formula (2); R.sub.9, R.sub.10 independently of each other are hydrogen, C.sub.1-C.sub.18alkyl, C.sub.2-C.sub.12alkenyl, C.sub.5-C.sub.10ocycloalkyl, phenyl-C.sub.1-C.sub.4alkyl, phenyl or together with the C atom to which they are attached form a 5-membered, 6-membered or 7-membered ring; and R.sub.11 is hydrogen, C.sub.1-C.sub.18alkyl, C.sub.5-C.sub.10cycloalkyl, C.sub.2-C.sub.12alkenyl, phenyl-C.sub.1-C.sub.4alkyl or phenyl.

##STR00001##

A flow battery includes a first liquid containing a redox mediator, a first electrode, a first active material, and a first circulator that circulates the first liquid between the first electrode and the first active material. The redox mediator contains a heteranthrene compound. The redox mediator contains a heteranthrene compound. The heteranthrene compound has a skeletal structure including a central ring structure, the central ring structure containing no nitrogen.

A flow battery includes a first liquid containing a redox mediator, a first electrode, a first active material, and a first circulator that circulates the first liquid between the first electrode and the first active material. The redox mediator contains a heteranthrene compound. The redox mediator contains a heteranthrene compound. The heteranthrene compound has a skeletal structure including a central ring structure, the central ring structure containing no nitrogen.