Electroluminescent materials and methods of manufacture and use
View Patent ↗Light emitting polymers can include a plurality of arylene monomeric units and a plurality of soft segment units independently selected from soft segment end caps; soft segment side chains coupled to a portion, but not all, of the arylene monomeric units; internal soft segment monomeric units; and combinations thereof. These light emitting polymers can be used in forming electroluminescent devices or other articles.
1. A donor sheet, comprising:
a substrate;
a light-to-heat conversion layer; and
a transfer layer comprising a light emitting polymer comprising a plurality of arylene monomeric units and a plurality of soft segment units independently selected from soft segment end caps; soft segment side chains coupled to a portion, but not all, of the arylene monomeric units; internal soft segment monomeric units; and combinations thereof.
2. The donor sheet of claim 1 , wherein the light emitting polymer comprises a polymer selected from one of Formulas I to XVII:
wherein D 1 and D 2 are substituted or unsubstituted arylene moieties, each EC is independently a soft segment end cap group, X and Y are capping groups, Ar 1 and Ar 2 are independently selected from substituted and unsubstituted C6-C20 arylene, substituted and unsubstituted C2-C20 heteroarylene, and substituted and unsubstituted C18-C60 divalent triarylamines, k, l, m, n, and o are integers in the range of 2 to 1000, q is an integer in the range of 1 to 4, each Z 1 is independently a soft segment side chain, and each T is independently a soft segment moiety.