Patent ID: 8815639
Filing Date: 2014-08-26
Classification: C07D,C08F,C08G,C09B,C09D,H01B,H01L

Abstract:
1. A method comprising: providing a substrate comprising a hole injection layer, coating the substrate with at least one ink comprising at least one hole transport arylamine compound comprising intractability groups to form a coated substrate, wherein the hole transport arylamine compound comprises a hole transporting core, wherein the hole transporting core is covalently bonded to a first arylamine group and also to a second arylamine group, wherein the intractability groups are covalently bonded to the hole transporting core, the first arylamine group, or the second arylamine group, or a combination thereof, wherein the hole transporting arylamine compound has a molecular weight of about 5,000 g/mole or less, and wherein the hole transporting arylamine compound comprises at least one sulfur heteroatom, heating the coated substrate.