Ink composition and electronic apparatus including film prepared using ink composition
An ink composition includes: a quantum dot containing at least one organic ligand on a surface thereof; a first monomer containing at least one epoxy group; a second monomer containing at least one oxetane group; a third monomer containing at least one thiol group; and a tertiary amine compound containing at least one allylamine group, where the organic ligand may contain at least one polar moiety. Also, an electronic apparatus including a film prepared from the ink composition is provided.
1 . An ink composition comprising:
a quantum dot comprising at least one organic ligand on a surface thereof;
a first monomer comprising at least one epoxy group;
a second monomer comprising at least one oxetane group;
a third monomer comprising at least one thiol group; and
a tertiary amine compound comprising at least one allylamine group,
wherein the organic ligand comprises at least one polar moiety.
2 . The ink composition of claim 1 , wherein the third monomer comprises a compound having a plurality of thiol groups.
3 . The ink composition of claim 1 , wherein the third monomer comprises a compound comprising one thiol group and a compound comprising a plurality of thiol groups.
4 . The ink composition of claim 1 , wherein the third monomer is represented by Formula 3-1 or Formula 3-2:
wherein, in Formulae 3-1 and 3-2,
L 31 is a linear or branched C 1 -C 20 alkane group, a linear or branched C 1 -C 20 alkene group, or a C 6 -C 20 arene group,
L 32 and L 33 are each a single bond,
*—O—*′, or
A 32 is
*—S—*′, a C 3 -C 20 heteroarene group, or
a31 to a33 are each independently 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10,
R 31 to R 35 are each independently hydrogen, deuterium, a halogen element, or a linear, branched, or cyclic C 1 -C 20 alkyl group,
n32 and n33 are each independently 0, 1, 2, 3, 4, or 5,
the sum of n32 and n33 is 1 or greater, and
* and *′ each indicate a binding site to an adjacent atom.
5 . The ink composition of claim 1 , wherein the tertiary amine compound comprises a compound comprising a plurality of allylamine groups.
6 . The ink composition of claim 1 , wherein the tertiary amine compound comprises a compound comprising one allylamine group and a compound comprising a plurality of allyl groups.
7 . The ink composition of claim 1 , wherein the tertiary amine compound is represented by Formula 4-1 or Formula 4-2:
wherein, in Formulae 4-1 and 4-2,
L 41 , L 42 , and L 43 are each independently a direct bond,
a41 and a42 are each independently 0, 1, 2, 3, 4, or 5,
a43 is 1, 2, 3, 4, or 5,
R 41 to R 48 are each independently hydrogen, deuterium, a halogen element, —CH 2 —CH═CH 2 , or a substituted or unsubstituted linear, branched, or cyclic C 1 -C 20 alkyl group,
a substituent of the linear, branched, or cyclic C 1 -C 20 alkyl group comprises deuterium, a halogen element, or —N(CH 2 —CH═CH 2 ) 2 , and
* and *′ each indicate a binding site to an adjacent atom.
8 . The ink composition of claim 1 , wherein the quantum dot comprises: a group II-VI semiconductor compound; a group III-V semiconductor compound; a group III-VI semiconductor compound; a group semiconductor compound; a group IV-VI semiconductor compound; a group IV element or compound; or a combination thereof.
9 . The ink composition of claim 1 , wherein the quantum dot has a core-shell structure.
10 . The ink composition of claim 1 , wherein the at least one polar moiety of the organic ligand comprises an alkylpolyol structure.
11 . The ink composition of claim 1 , further comprising a photopolymerization initiator.
12 . The ink composition of claim 1 , wherein a viscosity of the ink composition is in a range of about 20 centipoise (cP) to about 80 cP at a temperature of 25° C.
13 . The ink composition of claim 1 , comprising 2 parts by weight of a solvent based on 100 parts by weight of the ink composition.