A composite material, quantum dot light-emitting diode and preparation method thereof. The preparation method includes: providing ZnO nanoparticles and Au source, Au source is at least one of bulk Au or Au particles; mixing ZnO nanoparticles, Au source, S source with first organic solvent, performing hydrothermal reaction to prepare composite material. By performing hydrothermal reaction in organic solvent using ZnO nanoparticles, bulk Au and/or Au particles, and S source, S source can vulcanize surface of ZnO nanoparticles to form ZnS layer on surface of ZnO nanoparticles, Au source can be thermally dissolved and diffused into isolated distribution of atomic-level Au to realize loading on surface of ZnS layer, to obtain composite material with ZnO nanoparticles as core material, ZnS and Au as shell material. ZnS and Au in composite material can synergistically increase electron transmission efficiency of LED adopting same.

A composite material, quantum dot light-emitting diode and preparation method thereof. The preparation method includes: providing ZnO nanoparticles and Au source, Au source is at least one of bulk Au or Au particles; mixing ZnO nanoparticles, Au source, S source with first organic solvent, performing hydrothermal reaction to prepare composite material. By performing hydrothermal reaction in organic solvent using ZnO nanoparticles, bulk Au and/or Au particles, and S source, S source can vulcanize surface of ZnO nanoparticles to form ZnS layer on surface of ZnO nanoparticles, Au source can be thermally dissolved and diffused into isolated distribution of atomic-level Au to realize loading on surface of ZnS layer, to obtain composite material with ZnO nanoparticles as core material, ZnS and Au as shell material. ZnS and Au in composite material can synergistically increase electron transmission efficiency of LED adopting same.

To provide a quantum dot-containing resin sheet or film, a method for producing the same, and a wavelength conversion member that can, in particular, solve the problem of aggregation of the quantum dots and the problem with the use of a scattering agent, suppress a decrease in light conversion efficiency, and improve the light conversion efficiency of a resin molded product containing quantum dots. The quantum dot-containing resin sheet or film of the present invention includes a stack of a plurality of resin layers, at least one of the resin layers containing quantum dots, and the plurality of resin layers is integrally molded through co-extrusion.

Provided is an organic light emitting diode display device. The organic light emitting diode display device includes a flexible substrate, including a display region, a first barrier region and a second barrier region, wherein the first barrier region is located between the display region and the second barrier region, and a barrier is disposed on the flexible substrate of the second barrier region; wherein a groove is formed in the flexible substrate of the first barrier region, and an organic light emitting diode unit is disposed on the flexible substrate of the display region.

Provided is an organic light emitting diode display device. The organic light emitting diode display device includes a flexible substrate, including a display region, a first barrier region and a second barrier region, wherein the first barrier region is located between the display region and the second barrier region, and a barrier is disposed on the flexible substrate of the second barrier region; wherein a groove is formed in the flexible substrate of the first barrier region, and an organic light emitting diode unit is disposed on the flexible substrate of the display region.

Provided is a semiconductor nanoparticle complex composition and the like in which a semiconductor nanoparticle complex is dispersed at a high concentration and which has high fluorescence quantum yield. A semiconductor nanoparticle complex composition in which a semiconductor nanoparticle complex is dispersed in a dispersion medium, wherein: the semiconductor nanoparticle complex has a semiconductor nanoparticle and a ligand coordinated to the surface of the semiconductor nanoparticle; the ligand includes an organic group; the dispersion medium is a monomer or a prepolymer; the semiconductor nanoparticle complex composition further includes a crosslinking agent; and a mass fraction of the semiconductor nanoparticle in the semiconductor nanoparticle complex composition is 30% by mass or more.

Provided is a semiconductor nanoparticle complex composition and the like in which a semiconductor nanoparticle complex is dispersed at a high concentration and which has high fluorescence quantum yield. A semiconductor nanoparticle complex composition in which a semiconductor nanoparticle complex is dispersed in a dispersion medium, wherein: the semiconductor nanoparticle complex has a semiconductor nanoparticle and a ligand coordinated to the surface of the semiconductor nanoparticle; the ligand includes an organic group; the dispersion medium is a monomer or a prepolymer; the semiconductor nanoparticle complex composition further includes a crosslinking agent; and a mass fraction of the semiconductor nanoparticle in the semiconductor nanoparticle complex composition is 30% by mass or more.

The synthesis of quantum dots, whose surface and quantum dot size can be controlled as desired, can be stored in different solvents or solid without prolonged degradation, agglomeration and can be transferred to water from organic solvents by means of phase transfer reaction which means can be made water-soluble. The optical properties are related to the production of quantum dots, the size of the quantum dots is controlled with surface. Obtained quantum dots are ready to produce in large amounts and can take places of sensors, nanomaterial applications, florescent applications.

The present disclosure provides compounds of the formula: ##STR00001##
wherein the variables are defined herein. The present disclosure also provides methods of imaging Zn.sup.2+ within granules in cells, such as pancreatic α-, β-, and δ-cells. The present disclosure also provides methods of sorting cells comprising the use of the compounds of the present disclosure.

The present disclosure provides compounds of the formula: ##STR00001##
wherein the variables are defined herein. The present disclosure also provides methods of imaging Zn.sup.2+ within granules in cells, such as pancreatic α-, β-, and δ-cells. The present disclosure also provides methods of sorting cells comprising the use of the compounds of the present disclosure.