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.

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 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.

Small molecule calpain modulator compositions and pharmaceutical compositions can be prepared and used as therapeutic agents. Exemplary compositions include non-macrocyclic a-keto amide derivatives. The therarapeutic agents can be used for treating fibrotic disease or a resulting secondary disease state or condition. The small molecules can competitively bind with calpastatin and/or inhibit calpain through contact with CAPN1, CAPN2, and/or CAPN9 enzymes.

Small molecule calpain modulator compositions and pharmaceutical compositions can be prepared and used as therapeutic agents. Exemplary compositions include non-macrocyclic a-keto amide derivatives. The therarapeutic agents can be used for treating fibrotic disease or a resulting secondary disease state or condition. The small molecules can competitively bind with calpastatin and/or inhibit calpain through contact with CAPN1, CAPN2, and/or CAPN9 enzymes.

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. ##STR00001##

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. ##STR00001##

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.

##STR00001##

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.

##STR00001##

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.