A heteroacene having the following formula (F) is described. An organic electroluminescence device comprises the heteroacene as a phosphorescent host, a fluorescent host, a hole blocking layer, or an electron transport layer. The heteroacene lowers a driving voltage, or increases a current efficiency or a half-life of the organic electroluminescence device. ##STR00001##

A heteroacene having the following formula (F) is described. An organic electroluminescence device comprises the heteroacene as a phosphorescent host, a fluorescent host, a hole blocking layer, or an electron transport layer. The heteroacene lowers a driving voltage, or increases a current efficiency or a half-life of the organic electroluminescence device. ##STR00001##

The present disclosure relates to Near-infrared fluorescent indicators for lysosomes and application thereof. These indicators are composed of lipophilic NIR BODIPY derivatives and ionizable bis-tertiary amine moiety, which enable the formation of a transient amphiphilic state in acidic environments specifically. This structural feature affords accurate lysosomal membrane targeting ability at nanomole staining concentration.

The present disclosure relates to Near-infrared fluorescent indicators for lysosomes and application thereof. These indicators are composed of lipophilic NIR BODIPY derivatives and ionizable bis-tertiary amine moiety, which enable the formation of a transient amphiphilic state in acidic environments specifically. This structural feature affords accurate lysosomal membrane targeting ability at nanomole staining concentration.

The present disclosure relates to Near-infrared fluorescent indicators for lysosomes and application thereof. These indicators are composed of lipophilic NIR BODIPY derivatives and ionizable bis-tertiary amine moiety, which enable the formation of a transient amphiphilic state in acidic environments specifically. This structural feature affords accurate lysosomal membrane targeting ability at nanomole staining concentration.

The present disclosure relates to Near-infrared fluorescent indicators for lysosomes and application thereof. These indicators are composed of lipophilic NIR BODIPY derivatives and ionizable bis-tertiary amine moiety, which enable the formation of a transient amphiphilic state in acidic environments specifically. This structural feature affords accurate lysosomal membrane targeting ability at nanomole staining concentration.

A compound of Chemical Formula 1, and an organic photoelectric device, an image sensor, and an electronic device including the same are disclosed: ##STR00001## In Chemical Formula 1, each substituent is the same as defined in the detailed description.

A composition for a photoelectric device includes a p-type semiconductor compound represented by Chemical Formula 1 and an n-type semiconductor compound:

##STR00001##

In Chemical Formula 1, each substituent is the same as defined in the detailed description.

A composition for a photoelectric device includes a p-type semiconductor compound represented by Chemical Formula 1 and an n-type semiconductor compound:

##STR00001##

In Chemical Formula 1, each substituent is the same as defined in the detailed description.

To provide a fused hetero 5-membered ring molecule having further sufficiently high hole mobility. Disclosed is a fused hetero 5-membered ring molecule having, in one molecule, eight aromatic rings including three or five hetero 5-membered rings, and the eight aromatic rings having one or two naphthalene structures. The three or five hetero 5-membered rings are each independently selected from the group consisting of a thiophene ring, a selenophene ring, and a furan ring.