JPWO2021050641A5

JPWO2021050641A5 -

Info

Publication number: JPWO2021050641A5
Application number: JP2022514232A
Authority: JP
Publication date: 2023-10-03

Claims

(a) at least one organic solvent;
(b) at least one nanostructure comprising a core and at least one shell, the at least one nanostructure comprising an inorganic ligand bound to the surface of the nanostructure;
(c) at least one poly(alkylene oxide) additive.

2. The nanostructure composition of claim 1 , wherein the core comprises InP.

3. The nanostructured composition of claim 1 or 2 , wherein the at least one shell comprises a first shell comprising ZnSe and a second shell comprising ZnS.

Nanostructure composition according to any one of claims 1 to 3 , wherein the inorganic ligand comprises a halometalate anion.

The halometalate anion has formulas (I) to (III),
MX ₃ ^- (I), MX _4-x Y _x ^- (II), or MX _4-x Y _x ^2- (III)
(In the formula,
M is selected from the group consisting of Zn, Cd, Hg, Cu, Ag and Au;
X is selected from the group consisting of Br, Cl, F and I;
Y is selected from the group consisting of Br, Cl, F and I, and x is 0, 1 or 2)
5. The nanostructured composition of claim 4 , having one structure of .

Any of claims 1 to 5 , wherein the inorganic ligand includes an organic cation and is selected from the group consisting of a tetraalkylammonium cation, an alkylphosphonium cation, a formamidinium cation, a guanidinium cation, an imidazolium cation, and a pyridinium cation. The nanostructure composition according to item 1.

A nanostructured composition according to any one of claims 1 to 6 , wherein the weight percent value of nanostructures in the nanostructured composition is about 0.5% to about 10%.

8. The nanostructure composition of any one of claims 1-7 , wherein the organic solvent has a surface tension of about 20 dynes/cm to about 50 dynes/cm.

The organic solvent is an alkylnaphthalene, an alkoxynaphthalene, an alkylbenzene, an aryl, an alkyl-substituted benzene, a cycloalkylbenzene, a C ₉ -C ₂₀ alkane, a diaryl ether, an alkyl benzoate, an aryl benzoate or an alkoxy-substituted benzene. 9. Nanostructured composition according to any one of 8 .

The at least one poly(alkylene oxide) has formula (IV):

(In the formula,
x is 1 to 100,
y is 0 to 100,
R ^1A and R ^1B are independently H or C _1-20 alkyl;
R ² is C _1-20 alkyl;
X ₁ is a bond or C _1-12 alkyl;
X ₂ is a bond, -O-, -OC(=O)- or amide,
FG is -OH, _-NH2 , _-NH4 ⁺ , _-N3 , -C(=O) ^OR3 , -P(=O)( ^OR4 ) ₃ or -P( ^R5 ) ₄ ,
R ³ is H, C _1-20 alkyl or C _6-14 aryl;
R ⁴ is independently H, C _1-20 alkyl or C _6-14 aryl, and R ⁵ is independently H, C _1-20 alkyl or C _6-14 aryl)
Nanostructured composition according to any one of claims 1 to 9 , having:

11. The nanostructure composition of claim 10 , wherein x is 2-20 and y is 1-10.

12. Nanostructure composition according to claim 10 or 11 , wherein R ^1A is H and R ^1B is _CH3 .

The at least one poly(alkylene oxide) has formula VI:

(In the formula,
x is 1 to 100,
y is 0-100 and R ² is C _1-20 alkyl)
Nanostructured composition according to any one of claims 10 to 12 , having:

A method comprising depositing a nanostructured composition according to any one of claims 1 to 13 to form a layer on a substrate.

15. The method of claim 14 , wherein the deposition is by inkjet printing.

(a) a first conductive layer;
(b) a second conductive layer;
(c) a light emitting diode comprising a light emitting layer between the first conductive layer and the second conductive layer, the light emitting layer comprising at least one population of nanostructures; , (i) at least one organic solvent; and (ii) at least one nanostructure comprising a core and at least one shell, the at least one nanostructure comprising an inorganic ligand bound to the surface of the nanostructure. and (iii) at least one poly(alkylene oxide) additive.