Composition
The present invention relates to a composition comprising at least one light emitting moiety.
1 . A photo-reactive composition comprising at least one light emitting moiety, which is configured to show a haze value of 15% or less in the liquid state; or is configured to show a haze value of more than 15% in the cured state; or is configured to show the ratio of the haze value in cured state to the haze value in liquid state is more than 1;
wherein the composition comprises
a (meth)acrylate monomer of formula (I)
wherein
R 1 is a hydrogen atom, halogen atom of Cl, Br or F, methyl group, alkyl group, aryl group, alkoxy group, ester group or a carboxylic acid group;
R 2 is a hydrogen atom, halogen atom of Cl, Br or F, methyl group, alkyl group, aryl group, alkoxy group, ester group or a carboxylic acid group;
X 1 is
where “*” on the left side of the formula represents the connecting point to the carbon atom of the end group C═CR 1 of the formula (I) and “*” on the right side represents the connecting point to symbol X 2 of the formula (I);
n is 0 or 1;
X 2
where “*” on the left side of the formula represents the connecting point to symbol X 1 of the formula (I) and “*” on the right side represents the connecting point to the end group C═CR 2 of the formula (I);
m is 0 or 1;
R 3 is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms or an aryl group having 3 to 25 carbon atoms, which may be substituted by one or more radicals R a , where one or more non-adjacent CH 2 groups may be replaced by R a C═CR a , C≡C, Si(R a ) 2 , Ge(R a ) 2 , Sn(R a ) 2 , C═O, C═S, C═Se, C═NR a , P(═O)(R a ), SO, SO 2 , NR a , OS, or CONR a , and where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO 2 ;
R 4 is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms or an aryl group having 3 to 25 carbon atoms, which may be substituted by one or more radicals R a , where one or more non-adjacent CH 2 groups may be replaced by R a C═CR a , C≡C, Si(R a ) 2 , Ge(R a ) 2 , Sn(R a ) 2 , C═O, C═S, C═Se, C═NR a , P(═O)(R a ), SO, SO 2 , NR a , OS, or CONR a , and where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO 2 ;
R a is at each occurrence, identically or differently, H, D or an alkyl group having 1 to 20 carbon atoms, cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a hetero aromatic ring system having 5 to 60 carbon atoms, wherein H atoms may be replaced by D, F, Cl, Br or I; wherein two or more adjacent substituents R a may also form a mono- or polycyclic, aliphatic, aromatic or heteroaromatic ring system with one another;
and
a (meth)acrylate monomer of formula (II)
wherein
X 3 is
where “*” on the left side of the formula represents the connecting point to the end group C═CR 5 of the formula (I);
I is 0 or 1;
R 5 is a hydrogen atom, halogen atom of Cl, Br or F, methyl group, alkyl group, aryl group, alkoxy group, ester group or a carboxylic acid group;
R 6 is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, which may be substituted by one or more radicals R a , and where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO 2 ;
R 7 is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, which may be substituted by one or more radicals R a , and where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO 2 ;
R a is at each occurrence, identically or differently, H, D or an alkyl group having 1 to 20 carbon atoms, cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a hetero aromatic ring system having 5 to 60 carbon atoms, wherein H atoms may be replaced by D, F, Cl, Br or I; and wherein two or more adjacent substituents R a may also form a mono- or polycyclic, aliphatic, aromatic or heteroaromatic ring system with one another.
2 . The photo-reactive composition comprising at least one light emitting moiety according to claim 1 , which is configured to show a haze value of more than 15% in the cured state.
3 . The photo-reactive composition comprising at least one light emitting moiety according to claim 1 , which is configured to show a haze value of 15% or less in the liquid state.
4 . The photo-reactive composition comprising at least one light emitting moiety according to claim 1 , which is configured to show the ratio of the haze value in cured state to the haze value in liquid state is more than 1.
5 . The composition according to claim 1 , wherein the mixing ratio of the (meth)acrylate monomer of formula (I) to the (meth)acrylate monomer of formula (II) is 1:99 to 99:1.
6 . The composition according to claim 5 , wherein the boiling point of the (meth)acrylate monomer of formula (I) and/or of formula (II) is 250° C. or more.
7 . The composition according to claim 1 , wherein the viscosity of the composition is 35 cP or less at room temperature.
8 . The composition according to claim 1 , wherein said light emitting moiety comprises a ligand.
9 . A layer obtained from the composition according to claim 1 , by curing said composition.
10 . A layer obtained from the composition according to claim 1 , by curing said composition, and containing at least a matrix material, one light emitting moiety, and configured to show a haze value of more than 15%.
11 . A layer obtained from the composition according to claim 1 , further containing
scattering particles, wherein the total amount of the scattering particles is 4 wt % or less based on the total amount of the solid contents of the layer;
or
a 1 st phase and a 2 nd phase, wherein the 1 st phase and the 2 nd phase are different from each other, and the 1 st phase has a plurality of aggregates of the at least one light emitting moiety and higher concentration per unit volume in the at least one light emitting moiety than the 2 nd phase.
12 . The layer according to claim 11 containing at least a matrix material, and wherein the layer is configured to show a haze value of more than 15%.
13 . The layer according to claim 11 containing the at least one light emitting moiety, a matrix material and scattering particles, wherein the total amount of the scattering particles is 4 wt % or less based on the total amount of the solid contents of the layer.
14 . The layer according to claim 11 containing at least a matrix material and a plurality of light emitting moieties, contains a 1 st phase and a 2 nd phase, wherein said 1 st phase and said 2 nd phase are different from each other, and said 1 st phase has a plurality of aggregates of said light emitting moieties and higher concentration per unit volume in the light emitting moieties than the 2 nd phase.
15 . The layer according to claim 11 , having a layer thickness of 1 to 50 μm.
16 . A process of fabricating the layer according to claim 11 , comprising at least the following steps;
I) providing a composition onto a substrate,
which composition is a photo-reactive composition comprising at least one light emitting moiety, which is configured to show a haze value of 15% or less in the liquid state;
or
is configured to show a haze value of more than 15% in the cured state;
or
is configured to show the ratio of the haze value in cured state to the haze value in liquid state is more than 1, and
II) curing the composition.
17 . A color conversion device comprising at least a 1 st pixel partly or fully filled with the layer according to claim 11 comprising at least a matrix material containing a light emitting moiety, and a bank comprising at least a polymer material.
18 . A method for fabricating a color conversion device of claim 17 containing at least the following steps;
Xi) providing a bank composition onto a surface of a supporting medium,
Xii) curing the bank composition,
Xiii) applying photo-patterning to the cured composition to fabricate bank and a patterned pixel region,
Xiv) providing a composition to at least one pixel region,
which composition is a photo-reactive composition comprising at least one light emitting moiety, which is configured to show a haze value of 15% or less in the liquid state;
or
is configured to show a haze value of more than 15% in the cured state;
or
is configured to show the ratio of the haze value in cured state to the haze value in liquid state is more than 1, and
Xv) curing the composition.
19 . An optical device containing at least one functional medium configured to modulate a light or configured to emit light, and the color conversion device of claim 17 .
20 . The composition according to claim 8 , wherein the ligand is an alkyl type ligand having carbon atoms 2 to 25.