Triarylboron-Functionalized Metal Complexes for OLEDs

Abstract

Triarylboron functionalization was found recently to be a highly effective strategy in greatly enhancing the phosphorescence efficiency of Pt(II) compounds and the performance of Pt(II) compounds in electrophosphorescent OLEDs. This chapter examines the role of a dimesitylboron (BMes2) group in the phosphorescence and electrophosphorescence of N^C-, C^C, and N^C^N-chelate Pt(II) compounds. The influence of the location of the BMes2 group, substituent groups, ancillary ligands, and intramolecular hydrogen bonds on phosphorescent color/efficiency and the stability of the Pt(II) compounds are discussed in detail. The key focus is on the strategies of achieving efficient blue phosphorescent Pt(II) compounds. Preliminary electrophosphorescent data for BMes2-functionalized Pt(II) compounds are also presented.