The invention relates to compounds which are suitable for use in electronic devices, and electronic devices, in particular organic electroluminescent devices, containing said compounds.

The present invention relates to optical articles and optical filtering coatings comprising at least one absorbing dye comprising one of the groups of formulae of formulae (I), (II), (III) and (IV), wherein R represents an aryl or alkyi group, and the groups of formulae (I), (II), (III) and (IV) have at least one carbon atom substituted with a group chosen from OH, CN, bromo, NO.sub.2, alkoxy, aryloxy, COOH, CHO, COalkyl, COaryl, haloalkyl, SH, S-alkyl, S-aryl, SO.sub.2alkyl, OSO.sub.2alkyl, SO.sub.2aryl, OSO.sub.2aryl and sulfonamide, or have at least two carbon atoms substituted with a chloro group.

##STR00001##

The present invention relates to optical articles and optical filtering coatings comprising at least one absorbing dye comprising one of the groups of formulae of formulae (I), (II), (III) and (IV), wherein R represents an aryl or alkyi group, and the groups of formulae (I), (II), (III) and (IV) have at least one carbon atom substituted with a group chosen from OH, CN, bromo, NO.sub.2, alkoxy, aryloxy, COOH, CHO, COalkyl, COaryl, haloalkyl, SH, S-alkyl, S-aryl, SO.sub.2alkyl, OSO.sub.2alkyl, SO.sub.2aryl, OSO.sub.2aryl and sulfonamide, or have at least two carbon atoms substituted with a chloro group.

##STR00001##

A non-aqueous inkjet orange ink composition includes a pigment, a pigment dispersant, and an organic solvent, wherein the pigment contains C.I. Pigment Orange 36 and at least one type of pigment selected from C.I. Pigment Red 242, C.I. Pigment Red 254, and C.I. Pigment Orange 71. The non-aqueous inkjet orange ink composition can offer high weather resistance, good color development property, and excellent dispersion stability, as well as an ink set using such ink composition.

A non-aqueous inkjet orange ink composition includes a pigment, a pigment dispersant, and an organic solvent, wherein the pigment contains C.I. Pigment Orange 36 and at least one type of pigment selected from C.I. Pigment Red 242, C.I. Pigment Red 254, and C.I. Pigment Orange 71. The non-aqueous inkjet orange ink composition can offer high weather resistance, good color development property, and excellent dispersion stability, as well as an ink set using such ink composition.

A non-aqueous inkjet orange ink composition includes a pigment, a pigment dispersant, and an organic solvent, wherein the pigment contains C.I. Pigment Orange 36 and at least one type of pigment selected from C.I. Pigment Red 242, C.I. Pigment Red 254, and C.I. Pigment Orange 71. The non-aqueous inkjet orange ink composition can offer high weather resistance, good color development property, and excellent dispersion stability, as well as an ink set using such ink composition.

A non-aqueous inkjet orange ink composition includes a pigment, a pigment dispersant, and an organic solvent, wherein the pigment contains C.I. Pigment Orange 36 and at least one type of pigment selected from C.I. Pigment Red 242, C.I. Pigment Red 254, and C.I. Pigment Orange 71. The non-aqueous inkjet orange ink composition can offer high weather resistance, good color development property, and excellent dispersion stability, as well as an ink set using such ink composition.

An object of the present invention is to provide a method for accurately evaluating the specific incorporation of D-glucose into cells. The present invention as a means for achieving the object is characterized by comprising contacting a D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells and an L-glucose derivative that has a fluorescent chromophore in the molecule with different cells in the same cell strain to be evaluated, respectively, comparing the fluorescence emitted by the D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells with the fluorescence emitted by the L-glucose derivative that has a fluorescent chromophore in the molecule, and evaluating the specific incorporation of D-glucose into cells relative to L-glucose by taking the difference between the two kinds of fluorescence intensities.

An object of the present invention is to provide a method for accurately evaluating the specific incorporation of D-glucose into cells. The present invention as a means for achieving the object is characterized by comprising contacting a D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells and an L-glucose derivative that has a fluorescent chromophore in the molecule with different cells in the same cell strain to be evaluated, respectively, comparing the fluorescence emitted by the D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells with the fluorescence emitted by the L-glucose derivative that has a fluorescent chromophore in the molecule, and evaluating the specific incorporation of D-glucose into cells relative to L-glucose by taking the difference between the two kinds of fluorescence intensities.

A nonlinear optical dye includes a compound represented by the general formula (1) below. ##STR00001## In the above general formula (1), each of X.sup.1, X.sup.2, X.sup.3 and X.sup.4 independently represents a hydrogen atom, an alkyl group having a carbon number of 1 to 6, a halogen atom, a hydroxyl group, a nitro group, a cyano group, or a methylsulfonyl group. In the present invention, it is preferred that each of X.sup.1, X.sup.2, X.sup.3 and X.sup.4 independently represents a hydrogen atom, an alkyl group having a carbon number of 1 to 6, or a halogen atom. In the present invention, it is also preferred that the nonlinear optical dye has a dipole moment of 2.1 D or less and a maximum absorption wavelength within a range of 315 to 360 nm.