Disclosed are an oxazine compound and an application thereof. The oxazine compound has a structure of a general formula F. The oxazine compound described in the disclosure is a photo/acoustic dynamic active organic molecule with near-infrared absorption-emission function as well as photosensitivity and acoustic sensitivity. Maximum absorption and emission wavelengths of the compound are both greater than 660 nanometers, and a triplet-state conversion rate of the compound is high; and under illumination or ultrasound, the compound can produce reactive oxygen species with high efficiency, which has a good killing effect on cancer cells and cancer tissues, and almost has no toxic or side effects on normal tissues while achieving photo/acoustic dynamic therapy on tumors.

The present invention relates to: a novel merocyanine-based compound which exhibits a fluorescence signal at a visible light region of at least 380 nm, and which may be used for detecting biomolecules; and a biomolecular labeling dye, kit and contrast agent composition comprising the same.

An opto-electronic device includes a first electrode, a second electrode facing the first electrode, a photoactive layer between the first electrode and the second electrode, a buffer layer between the photoactive layer and the second electrode, a first compound represented by Formula 1, a second compound represented by Formula 2, and a third compound represented by Formula 3:

##STR00001##

An opto-electronic device includes a first electrode, a second electrode facing the first electrode, a photoactive layer between the first electrode and the second electrode, a buffer layer between the photoactive layer and the second electrode, a first compound represented by Formula 1, a second compound represented by Formula 2, and a third compound represented by Formula 3:

##STR00001##

Provided is an opto-electronic device including a first electrode, a second electrode facing the first electrode, and a photoactive layer arranged between the first electrode and the second electrode, wherein the photoactive layer includes a first layer and a second layer, the first layer including a first compound, and the second layer including a second compound that does not include a 5-membered ring, the first compound is an electron-donating compound, the second compound is an electron-accepting compound, and the opto-electronic device satisfies Equation 1:

0.1?(E.sup.1.sub.LUMO?E.sup.2.sub.LUMO)/(E.sup.1.sub.LUMO?E.sup.1.sub.HOMO)?0.5Equation 1 wherein, in Equation 1, E.sup.1.sub.LUMO, E.sup.1.sub.HOMO, and E.sup.2.sub.LUMO are each as defined herein.

Provided is an opto-electronic device including a first electrode, a second electrode facing the first electrode, and a photoactive layer arranged between the first electrode and the second electrode, wherein the photoactive layer includes a first layer and a second layer, the first layer including a first compound, and the second layer including a second compound that does not include a 5-membered ring, the first compound is an electron-donating compound, the second compound is an electron-accepting compound, and the opto-electronic device satisfies Equation 1:

0.1?(E.sup.1.sub.LUMO?E.sup.2.sub.LUMO)/(E.sup.1.sub.LUMO?E.sup.1.sub.HOMO)?0.5Equation 1 wherein, in Equation 1, E.sup.1.sub.LUMO, E.sup.1.sub.HOMO, and E.sup.2.sub.LUMO are each as defined herein.

Provided is a compound represented by any one of Chemical Formulas 1 to 3, and having a molecular packing density of greater than or equal to about 1.55 molecules/nm.sup.3 and photoelectric devices, light absorption sensors, sensor-embedded display panels, and electronic devices including the same.

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In Chemical Formulas 1 to 3, the definition of each substituent is as described in the specification.

Provided is a compound represented by any one of Chemical Formulas 1 to 3, and having a molecular packing density of greater than or equal to about 1.55 molecules/nm.sup.3 and photoelectric devices, light absorption sensors, sensor-embedded display panels, and electronic devices including the same.

##STR00001##

In Chemical Formulas 1 to 3, the definition of each substituent is as described in the specification.

An object of the present invention is to provide an organic thin film transistor having excellent carrier mobility and excellent atmospheric stability, a novel compound, an organic thin film transistor material, an organic semiconductor film, an organic thin film transistor composition, and a method of manufacturing an organic thin film transistor using this. The organic thin film transistor according to the present invention has an organic semiconductor film containing a compound represented by Formula (1) or (2).

##STR00001##

An object of the present invention is to provide an organic thin film transistor having excellent carrier mobility and excellent atmospheric stability, a novel compound, an organic thin film transistor material, an organic semiconductor film, an organic thin film transistor composition, and a method of manufacturing an organic thin film transistor using this. The organic thin film transistor according to the present invention has an organic semiconductor film containing a compound represented by Formula (1) or (2).

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