Synthesis and Study of a Novel Family of Conjugated Carbazole- Centered Compounds with Potential Applications in Organic Light- Emitting Diodes (OLEDs)

Abstract

Organic Light-Emitting Diodes (OLEDs) have been of great interest in various technological applications. Currently, there have been many successful syntheses of stable organic compounds capable of emitting red and green light. However, synthesis of stable blue light-emitting compounds has proven to be challenging and a complete color spectrum requires red, green, and blue light emitters. The present work focused on the synthesis of a novel family of carbazole-centered molecules with hopes of creating a stable blue light emitter. The parent compound is comprised of three subunit molecules, which have to be prepared individually. The subunit 4-bromodiphenylacetylene was prepared by a former research student while the subunits 2,7-dibromocarbazole (14 % yield) and 1- (2`,3`,4`,5`-tetraphenyl)phenyl-4-bromobenzene (dendron) (34 % yield) were synthesized in the lab. With the three subunits, an aryl boronate ester synthesis was performed to yield 4-(4, 4, 5, 5-tetramethyl-1, 3, 2,-dioxaborolane) diphenylacetylene (73 % yield), which will undergo a Suzuki coupling reaction to couple the subunits together and form the parent compound.