Arsinoquinolines as a Novel Class of Luminophores

Abstract

Arsinoquinolines, being heavier pnictogen‐substituted aminoquinoline analogues, have been used as bidentate ligands. However, they have never been studied as luminophore, though luminescent aminoquinolines are well known. In this work, seven kinds of arsinoquinolines, in which a diphenylarsino group are substituted at all the possible substitution positions of quinoline, were synthesized by using a non‐volatile arsenic precursor. The obtained arsinoquinolines showed phosphorescence at 77 K, and the emission properties in the solid states were dependent on the substitution position of the diphenylarsino group.

Synthesis and Photophysical Properties of Heavier Pnictogen Complexes

“…In continuation of the search for heavier pnictogen-based systems for π-conjugated functional compounds, Naka and co-workers synthesized a series of seven different substituted arsinoquinolines and studied their photophysical properties. [88] Arsinoquinolines (49)(50)(51)(52)(53)(54)(55), with all available positions of quinoline being substituted with a diphenylarsino group, were synthesized starting from hexaphenylhexaarsine (II). Treatment of Ph 2 AsLi (V) with bromo-quinolines afforded arsinoquinolines (49)(50)(51)(52)(53)(54)(55) in moderate to good yields.…”