An organometallic compound, represented by Formula 1:

##STR00001## wherein, in Formula 1, groups and variables are the same as described in the specification.

An organometallic compound, represented by Formula 1:

##STR00001## wherein, in Formula 1, groups and variables are the same as described in the specification.

Provided is a carbon nanostructure including a plurality of organic molecules that are decomposition products of an organic solvent. The carbon nanostructure includes a carbon nanostructure core and a plurality of organic molecules bound to and grown on the carbon nanostructure core, wherein the carbon nanostructure core is a combination of the organic molecules.

Provided is a carbon nanostructure including a plurality of organic molecules that are decomposition products of an organic solvent. The carbon nanostructure includes a carbon nanostructure core and a plurality of organic molecules bound to and grown on the carbon nanostructure core, wherein the carbon nanostructure core is a combination of the organic molecules.

Disclosed herein is a compound represented by formula (1): A-L-B, wherein: A is a group represented by formula (1-A); B is a group represented by formula (1-B); L is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 50 ring atoms; and L is bonded to one of R.sup.1 to R.sup.4 of formula (1-A) and R.sup.11 to R.sup.14 of formula (1-B);

##STR00001##

in which the groups Q.sup.1, Q.sup.2, L.sup.1, L.sup.2, R.sup.1-R.sup.4, R.sup.11-R.sup.14, R.sup.a-R.sup.d and R.sup.e-R.sup.h defined herein. Also disclosed herein are materials and devices containing the compound represented by formula (1).

Disclosed herein is a compound represented by formula (1): A-L-B, wherein: A is a group represented by formula (1-A); B is a group represented by formula (1-B); L is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 50 ring atoms; and L is bonded to one of R.sup.1 to R.sup.4 of formula (1-A) and R.sup.11 to R.sup.14 of formula (1-B);

##STR00001##

in which the groups Q.sup.1, Q.sup.2, L.sup.1, L.sup.2, R.sup.1-R.sup.4, R.sup.11-R.sup.14, R.sup.a-R.sup.d and R.sup.e-R.sup.h defined herein. Also disclosed herein are materials and devices containing the compound represented by formula (1).

A quantum dot ink, a manufacturing method thereof and a quantum dot light emitting diode device are provided. The quantum dot ink includes a non-polar organic solvent, a surface tension modifier and a hydrophobic quantum dot, the quantum dot ink further includes a carrier transport material, wherein phase separation is present between the hydrophobic quantum dot and the carrier transport material. After completing ink-jet printing the quantum dot ink, phase separation occurs between the hydrophobic quantum dot and the carrier transport material. Thus, the two-layer structure of a hydrophobic quantum dot layer and a carrier transport material layer is formed through one process. Not only a quantum dot light emitting device is manufactured by the method of ink-jet printing, but also the operation is simplified, and the manufacturing cost of the quantum dot light emitting device is reduced.

Size-tunable phosphorescent particles may be formed through self-assembly of biocompatible linear polymers, such as chitosan and other linear polymers, that bear positive surface charges, through polyelectrolytic complexation to a polyanionic metal phosphor, such as polyanionic gold(I) phosphor (AuP). The phosphorescent hydrogel nanoparticles and thin films thereof are useful for imaging, sensing of biological molecules, detection of hypoxia, and light-emitting devices. The phosphorescent hydrogel particles can be formed from a variety of linear polymers by physical cross-linking using polyelectrolytic light-emitting species, without the need for the phosphorescent complex to be entrapped in an existing microsphere or nanosphere polymer particle.

Size-tunable phosphorescent particles may be formed through self-assembly of biocompatible linear polymers, such as chitosan and other linear polymers, that bear positive surface charges, through polyelectrolytic complexation to a polyanionic metal phosphor, such as polyanionic gold(I) phosphor (AuP). The phosphorescent hydrogel nanoparticles and thin films thereof are useful for imaging, sensing of biological molecules, detection of hypoxia, and light-emitting devices. The phosphorescent hydrogel particles can be formed from a variety of linear polymers by physical cross-linking using polyelectrolytic light-emitting species, without the need for the phosphorescent complex to be entrapped in an existing microsphere or nanosphere polymer particle.

The present invention provides a germanate luminescent material, a general molecular formula thereof being Zn.sub.2-2xGeO.sub.4:Mn.sub.2x,M.sub.y, wherein M is selected from at least one of Ag, Au, Pt, Pd, and Cu metal nano particles; 0<x0.05; M is doped in Zn.sub.2-2xGeO.sub.4:Mn.sub.2x, and y is a molar ratio of M to Zn.sub.2-2xGeO.sub.4:Mn.sub.2x, 0<y110.sup.2. The metal nano particle M is doped in a germanate luminescent substrate of the germanate luminescent material, and the metal nano particle M improves internal quantum efficiency of the luminescent material so that the germanate luminescent material has a high luminescent intensity. Also provided is a preparation method for the germanate luminescent material.