Curable material and its application
A curable material is provided. The curable material has the structure of formula I or formula II: wherein, X, R1, R2, m1 to m3, and n1 to n3 are defined as cited in the description.
1. A curable material, which has a structure of formula I or formula II:
wherein,
X is a divalent luminescent organic group;
R1 is selected from the group consisting of
R2 is a mono-valent organic group without a curable group;
m1, m2, m3, n1, n2, and n3 are independently an integer greater than 1; and
the ratio of m2 and m1 and the ratio of n2 and n1 are independently within the range of 2 to 10.
2. A curable material according to claim 1 , wherein X is an unit having the following structure:
wherein R5 and R6 are independently a substituted or unsubstituted C2 to C40 aliphatic group or a substituted or unsubstituted C6 to C40 aromatic group.
3. A curable material according to claim 2 , wherein R5 and R6 are independently a substituted or unsubstituted C4 to C16 aliphatic group or a substituted or unsubstituted C6 to C20 aromatic group.
4. A curable material according to claim 2 , wherein R5 and R6 are independently a butyl group, a pentyl group, a hexyl group, an octyl group, a phenyl group substituted by an alkyl group, or a phenyl group substituted by an alkoxy group.
5. A curable material according to claim 1 , wherein the ratio of (m1+m2) and m3 and the ratio of (n1+n2) and n3 are independently within the range of 0.6 to 1.8.
6. A curable material according to claim 1 , wherein the ratio of (m1+m2) and m3 and the ratio of (n1+n2) and n3 are independently within the range of 0.8 to 1.2.
7. A curable material according to claim 1 , wherein R1 is
8. A curable material according to claim 1 , wherein R2 is a substituted or unsubstituted C2 to C8 aliphatic group or a substituted or unsubstituted C6 to C20 aromatic group.
9. A curable material according to claim 8 , wherein R2 is an ethyl group, a propyl group, a butyl group, a pentyl group, an unsubstituted phenyl group, a phenyl group substituted by an alkyl group, or a phenyl group substituted by an alkoxy group.
10. A curable material according to claim 1 , wherein the weight average molecular weight of the curable material is within the range of 3,000 to 300,000.
11. A curable material according to claim 1 , wherein the weight average molecular weight of the curable material is within the range of 5,000 to 100,000.
12. A curable material according to claim 1 , wherein the curable material is used as a hole transporting material.
13. An organic electroluminescent device, comprising a first conductive layer, a hole transporting layer, an emitting layer and a second conductive layer, wherein the hole transporting layer comprises the curable material of claim 1 .