Intramolecular excimer formation in carbazole double molecules

Abstract

The emission properties of various carbazole ``double'' molecules in solution have been investigated. One compound in particular, namely 1,3‐bis(N‐carbazolyl) propane, a useful model coumpound for poly(N‐vinylcarbazole), has been studied in detail. Both steady state and transient measurements are utilized to determine rate and thermodynamic parameters for the formation of intramolecular excimers. Results on other model coumpounds in which the carbazole groups are symmetrically or unsymmetrically attached to the 1,3 positions of a propane chain are used to offer qualitative insight regarding the geometry of the intramolecular excimer state.