Branched phenylene-terminated thiophene oligomers
View Patent ↗A composition comprising a plurality of molecules. Each of the molecules has a core comprising at least one aromatic ring and at least three pendant arms chemically bonded to the core. The pendant arms comprise a phenylene-terminated thiophene oligomer.
1. A method of manufacture, comprising,
forming a layer on a substrate, said layer comprising a plurality of branched organic molecules, each of said molecules having a core and three pendant arms covalently bonded to said core, wherein
said core is an aromatic ring or a fused aromatic ring system,
said pendant arms comprise a phenylene-terminated thiophene oligomer,
a pi-pi conjugation portion of said branched organic molecules includes said terminal phenylene groups of said three pendant arms and said core, and
said branched organic molecule has a molecular weight of less than about 2000 gm/mol.
2. The method of claim 1 , wherein forming said layer comprises evaporating said branched organic molecules to deposit said molecules onto said substrate.
3. The method of claim 1 , wherein forming said layer comprises drop casting said branched organic molecules on said substrate.
4. The method of claim 1 , wherein said layer is a semiconductive film in an OFET device.
5. The method of claim 1 , wherein said layer is a light-emitting layer of an OLED device.