The invention pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one organic solvent; (b) at least one population of nanostructures comprising a core and at least one shell, wherein the nanostructures comprise inorganic ligands bound to the surface of the nanostructures; and (c) at least one poly(alkylene oxide) additive. The nanostructure compositions comprising at least one poly(alkylene oxide) additive show improved solubility in organic solvents. And, the nanostructure compositions show increased suitability for use in inkjet printing. The disclosure also provides methods of producing emissive layers using the nanostructure compositions.

The invention pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one organic solvent; (b) at least one population of nanostructures comprising a core and at least one shell, wherein the nanostructures comprise inorganic ligands bound to the surface of the nanostructures; and (c) at least one poly(alkylene oxide) additive. The nanostructure compositions comprising at least one poly(alkylene oxide) additive show improved solubility in organic solvents. And, the nanostructure compositions show increased suitability for use in inkjet printing. The disclosure also provides methods of producing emissive layers using the nanostructure compositions.

An ink set is an ink set including a cyan ink C1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a magenta ink M1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a yellow ink Y1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a cyan ink C2 which has a fluorescent brightening intensity of less than 3.0 and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a magenta ink M2 which has a fluorescent brightening intensity of less than 3.0 and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, and a yellow ink Y2 which has a fluorescent brightening intensity of less than 3.0 and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, in which the SP values are values obtained by a turbidity titration method using a mixed solution of water and acetone.

An ink set is an ink set including a cyan ink C1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a magenta ink M1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a yellow ink Y1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a cyan ink C2 which has a fluorescent brightening intensity of less than 3.0 and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a magenta ink M2 which has a fluorescent brightening intensity of less than 3.0 and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, and a yellow ink Y2 which has a fluorescent brightening intensity of less than 3.0 and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, in which the SP values are values obtained by a turbidity titration method using a mixed solution of water and acetone.

An ink jet ink composition is a water-based ink that contains at least one pigment and at least one resin and is for use in recording on a low- or non-absorbent recording medium. The ink composition contains at least one water-soluble low-molecular-weight organic compound that has a melting point of 30° C. or above and is any of an amide, sulfur-containing compound, or cyclic ether, and the low-molecular-weight organic compound constitutes 10% by mass or less of the total mass of the ink composition. The ink composition also contains at least one organic solvent that is a diol having a melting point of 25° C. or below, and the organic solvent constitutes a higher percentage than the low-molecular-weight organic compound.

An ink jet ink composition is a water-based ink that contains at least one pigment and at least one resin and is for use in recording on a low- or non-absorbent recording medium. The ink composition contains at least one water-soluble low-molecular-weight organic compound that has a melting point of 30° C. or above and is any of an amide, sulfur-containing compound, or cyclic ether, and the low-molecular-weight organic compound constitutes 10% by mass or less of the total mass of the ink composition. The ink composition also contains at least one organic solvent that is a diol having a melting point of 25° C. or below, and the organic solvent constitutes a higher percentage than the low-molecular-weight organic compound.

An ink composition for additive manufacture of silica aerogel objects essentially consists of a gellable silica sol containing an admixture of 30 to 70 vol.% of a mesoporous silica powder in a base solvent. The mesoporous silica powder has a particle size range of 0.001 to 1 mm and a tap density of 30 to 200 kg/m3 and comprises at least 10% by weight of silica aerogel powder. The composition has a yield stress in the range of 30 to 3000 Pa and a viscosity of 5 to 150 Pa.Math.s at a shear rate of 50 s−1. Furthermore, the composition has shear thinning properties defined as a reduction in viscosity by a factor between 10 and 103 for an increase in shear rate by a factor of 104 to 105. A method of additive manufacturing of a three-dimensional silica aerogel object by direct ink writing comprises providing such ink composition, forcing the same through a convergent nozzle, thereby forming a jet of the ink composition which is directed in such manner as to form a three-dimensional object by additive manufacturing. After initiating and carrying out gelation of the gellable silica sol constituting said object, a drying step yields the desired three-dimensional silica aerogel object.

An ink composition for additive manufacture of silica aerogel objects essentially consists of a gellable silica sol containing an admixture of 30 to 70 vol.% of a mesoporous silica powder in a base solvent. The mesoporous silica powder has a particle size range of 0.001 to 1 mm and a tap density of 30 to 200 kg/m3 and comprises at least 10% by weight of silica aerogel powder. The composition has a yield stress in the range of 30 to 3000 Pa and a viscosity of 5 to 150 Pa.Math.s at a shear rate of 50 s−1. Furthermore, the composition has shear thinning properties defined as a reduction in viscosity by a factor between 10 and 103 for an increase in shear rate by a factor of 104 to 105. A method of additive manufacturing of a three-dimensional silica aerogel object by direct ink writing comprises providing such ink composition, forcing the same through a convergent nozzle, thereby forming a jet of the ink composition which is directed in such manner as to form a three-dimensional object by additive manufacturing. After initiating and carrying out gelation of the gellable silica sol constituting said object, a drying step yields the desired three-dimensional silica aerogel object.

An identification device and procedure for pharmaceutical containers comprising at least one means of marking at least one secured identification code on each of the containers, characterised in that the device comprises at least one inkjet system configured to print the identification code on at least one surface of the moving container with at least one ink which exhibits visible fluorescence when radiated with ultraviolet (UV) radiation, and whose drying time is 1 to 3 seconds or less than about 3 seconds.

The present invention relates to a 2-dimensional MXene particle surface-modified with a functional group comprising a saturated or unsaturated hydrocarbon, a preparation method thereof, and a use thereof (e.g., a conductive film).