A near-infrared absorber includes a compound represented by Chemical Formula 1. A near-infrared absorbing/blocking film, a photoelectric device, an organic sensor, and an electronic device may include the near-infrared absorber. ##STR00001## In Chemical Formula 1, X.sup.1, X.sup.2, Y.sup.1, Y.sup.2, Ar, Ar.sup.1, and Ar.sup.2 are the same as defined in the detailed description.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts of formula ##STR00001##
which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (ΔE.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts of formula ##STR00001##
which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (ΔE.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

A laundry care composition comprises a laundry care ingredient or adjunct and at least one compound that is capable of changing from a first color state (i.e., the initial color state in the composition) to a second color state that is perceptibly different from the first color state. A method for treating textile articles comprises the steps of: (a) providing a laundry care composition as described above; (b) adding the laundry care composition to a liquid medium; and (c) placing the textile articles in the liquid medium.

A laundry care composition comprises a laundry care ingredient or adjunct and at least one compound that is capable of changing from a first color state (i.e., the initial color state in the composition) to a second color state that is perceptibly different from the first color state. A method for treating textile articles comprises the steps of: (a) providing a laundry care composition as described above; (b) adding the laundry care composition to a liquid medium; and (c) placing the textile articles in the liquid medium.

A textile printing ink jet ink composition includes a dioxazine pigment, a resin particle, and a lubricant, wherein the content of the dioxazine pigment is 0.5 to 1.5 mass % based on the total amount of the ink composition.

A textile printing ink jet ink composition includes a dioxazine pigment, a resin particle, and a lubricant, wherein the content of the dioxazine pigment is 0.5 to 1.5 mass % based on the total amount of the ink composition.

The instant invention provides near-infrared fluorescent biological contrast agents and methods of using them.

The instant invention provides near-infrared fluorescent biological contrast agents and methods of using them.

The compounds provided herein are phenoxazines that can be used as far red to near-infrared nerve-sparing fluorescent compounds in medical procedures.